Who cares? Why live by religon's rules? Almost everything is 'wrong' to churches, yet if you do not give money every week you burn in fucking hell.
There's nothing wrong about masturbation. It's not a sin, it is self stimulation. Your sperm aren't souls, or whatever, they are sperm cells, they can create a child when they reach a fertile egg and create a baby, which can ruin your life if you're not ready.
Churches view masturbation as a 'bad' thing because sex is man and a woman ONLY when married. Jerking off wont make you go blind, it can only help you, as when you ejaculate your brain releases a drug into your blood, which gives that satisfying feeling. That's why ejaculation feels good.
Tell you priest, mom, or whoever to fuck off if they say masturbation is wrong. If they say "I never get horny, so I don't jerk off." Tell them to burn in hell for lying, they're human too.