If all females started to go topless everywhere I go.
I would get uncontrollable raging boners all the time, It's not my fault, it's just the human body. The women breasts are just arousing and beautiful and they don't have to be big either. How can you compare a bare female chest to a bare male chest? I guess I am biased since I am not gay, anyways.
Sure if we were all naked all the time eventually it wouldn't have that effect but that's not the reality we are currently living in.