"It is entirely logical for me to believe that something should be done but also oppose it being done"
I get this feeling all the time. I believe that something should be done to improve lives of future generations because it makes world better, safer, more free, educated and smarter, but I also oppose it out of jealousy of them living a better life than I did.
"and oppose to believe what I believe in"
I believe that God exists out of my irrational fears, but I also oppose that belief because no way any person living in Hell called Earth should dignify God who created it by believing in him.
"consider something true but also believe its false"
Same applies here. I consider that world will eventually become a better place thanks to technology, learning, advancements, new discoveries, but I also have small belief it's false because technology isn't good by default, it can end up badly too, like us being slaves to technology, life degrading into further hopeless abyss where all magic is lost.
It's called being undecided, this is just a longer term for it.