What is all the increse in anal sex about?

It's probably not that there has been an increase. It might just be that people are more open about their sexuality and more willing to talk about things that have a taboo associated with them.

Give your source - who says there is an increase in anal sex?

As long as a couple practices SAFER SEX risks from anal sex are really not much greater than from vaginal sex, perhaps even less - that means using condoms, lubricant, either cleaning before going back to vaginal sex or using female condoms to go back and forth between the two safely, avoiding pain or damage with anal play and relaxation beforehand, and regular screening. What's the big deal with the butthole? No big deal, but if done right it can be as enjoyable as any other sex act and slightly lower risk of pregnancy.

Beware! It's all a conspiracy by Fleet enema company.

So women can tell their Daddy "I saved my virginity for my husband."

Well that is why you use tones of lube, go in slowly and dont let the male insert his *** bacteria penis into a vag