I honestly had no idea that anyone did still have a problem with it, except for the Mormons (I went out with a guy who was a Mormon, and as a teenager they gave him a tract about the evils of wanking).

When I was a kid in secondary school (11-16) it was a bit more taboo to talk about it, and I think everyone thought they were the only one. I remember in a biology class our textbook referred to masturbation as "perfectly normal", and everyone looked stunned. I "came out of the closet" and admitted that I did, and one by one everyone else said "yeah, me too", which felt rather liberating

Nowadays, in the UK at any rate, people talk about it as casually as they'd mention having gone out for a meal. I see there's even a new word for it, which apparently comes from Japanese comics: "fap" (noun and verb). It's onomatopoeic (a word that sounds like the action, like "miaow" or "hiss") - so not only does it have health benefits, but it enriches the English language too!