Although people say I have great vision I try to blind myself by staring at the sun and doing other things only because I want to wear glasses
Why do you want to wear glasses?
I think glasses look really cool and that's why want to intentionally mess up my vision.
I agree that glasses are cool, but you are not very smart for wanting to go blind because of it. Going blind means pitch black, and glasses won't save you then. Why not just wear fake glasses?
What if I became a girl and she wore them?
I am not sure what that has to do with anything. You are harming yourself and there is no reason when fake glasses will give you the same effect without hurting yourself.