Because these arguments were not denied, I will expand on them
- Return of investments long term - expanded
- Diversity of investments - expanded
Opponent's logic:
My opponent is essentially using:
Best investment = maximal return of investment.
And I agree for that premise to be basis for this debate, and next I will cover why diversity of investments and return of investments long term actually result in maximum return of investments.
But for that, I need to add one third point.
III. Market unpredictability favors diversity of investments
Because market is by its nature, unpredictable, nothing you invest in is "guaranteed to work". If you invest based on merely getting more money in return, inflation of money which rises could defeat your return of investments after you get them. If you invest by buying something physical, it could lose value.
However, market unpredictability goes both ways. things can also surprisingly rise in value.


As we can see here, gold in 1 year gained 38% of value. My opponent mentioned S&P, and as we can see, S&P was outperformed by gold for past 5 years. Gold in 1 past year outperformed any year of S&P from 2016 to 2026.
Because what will grow in value is essentially unknown, and depends on demand. If suppose, demand for gold skyrockets more in next 40 years, gold will outperform S&P again.
In 1970, price of gold was about 40$. If someone invested 10,000$ in gold in 1970, today, he would have millions, because today price is over 100x higher.
My opponent correctly mentioned that price of gold tends to drop and rise, but conclusion he makes from it is incorrect. When price of gold drops, that is not time to sell gold, but to buy gold so when price rises again, profit is made.
But market unpredictability principle is best described by example of most obvious but unpredictable rise: Bitcoin.
Suppose that someone in year 2009 chose to invest 100$ in bitcoin. My opponent would tell him that its a bad idea with no guaranteed results, and that safer and guaranteed options exist. But today, that person would be a billionaire. Which moves us to next point: Diversity of investments expanded.
II. Diversity of investments expanded
My opponent didnt challenge that diversity of investments reduces risks significantly, and greater diversity reduces risk more, thus reducing diversity by not including gold logically increases risk.
But what diversity of investments also does is, maximize potential for "skyrocket value".
Because you cant predict what will skyrocket in future, investing in more than one thing increases chance of hitting exactly the thing which does skyrocket.
Consider again, example.
Lets say risks are 50%, and chance to skyrocket is 10%.
Investing in only one thing keeps risk of full failure at 50%, and chance to skyrocket at 10%.
But investing in 10 things, reduces risk of full failure to under 1%, while increasing chance of one of them to skyrocket in value to over 90% chance.
Gold, as demonstrated before, has a chance to skyrocket. Demand for gold could indeed increase suddenly, causing sharp price rise.
So investing 200$ in gold, (to buy 1 gram of 99.9 purity gold) is not any expensive investment. But if gold rises in price 100x like it did in past 50 years, that 200$ becomes 20.000$. If it skyrockets, which is possible, the return of investments could be even greater.
So logical deduction naturally follows:
Greater diversity of investments (where each has chance to skyrocket) = Greater chance for one investment to skyrocket
Adding gold as one of things to invest in = Greater diversity of investments
Adding gold as one of things to invest in = Greater chance for one investment to skyrocket.
this is only proved false if my opponent proves gold has no chance to skyrocket. But such thing cannot be proved, because it is easily possible gold skyrockets due to rise in demand.
Because my opponent is making false dichotomy between S&P and gold. One should invest in both, and in crypto, and in land. there is no "this or that" for anyone with sufficient amount of money. People with sufficient amount of money should always logically perfer greater diversity of investments where each investment has chance of skyrocket.
Its why I dont own merely gold, but land and crypto, and silver, and business, and jewelry. My position here isnt "invest all money in gold" - I dont do that. But my position is "invest some money in gold".
III. Return of investments long term - expanded
My opponent didnt deny that gold indeed did saw 10x rise in price in past 20 years, and I added also 100x rise in price in past 50 years as expanded argument.
But because world governments keep printing money on mass scale, and US government prints trillions per year, the value of money compared to gold must fall by mere great increase of ratio of amount of money to amount of gold, because money supply is increased faster than gold supply is increased. Even if demand stays same (same amount of people want to buy same amount of gold every year), the change in gold supply to money supply affects price irrelevant of demand staying same. But if demand increases on top of that, the chance for gold skyrocketing likewise increases.
Because government today prints more money than ever before, gold in next 50 years could likely see greater increase than in past 50 years, so likely an increase of over 100x in price, compared to 100x in past 50 years.
Gold is essentially a long term investment, and historically, long term investment in gold would have payed off, because price of gold, even if it drops at some point, eventually recovers and increases more.
Because my opponent didnt deny that long term investments are superior to short term investments, in case of gold, we must logically default to long term investment in gold when investing in gold.
And long term investment in gold shows that gold indeed did pay off.
Conclusion:
Diversity of investments, market unpredictability and long term investments show that investing 200$ in gold and also investing in many other things alongside that maximizes chance of skyrocket value of one option invested in, while greatly reducing risks.