Also..i.dont think it's that damn hard to protect yourself and prevent pregnancy.
It is pretty hard, and requires a bit of luck. Contraception is only 90+% effective under perfect conditions. So when 100 people have sex with contraception, at least a few are still running the risk of pregnancy.
Don't have sex then.
That's pretty illogical. Husbands and wives should completely stop having sex the instant they have the number of children then want?
Think then post, Brietbart boy.
Vasectomies
Also wouldn't make sense: husband and wife have one kid which they can afford. They don't want another one right away because it'd be irresponsible, but in the future they do want more. So vasectomies are out, too.