That same old tired line of remember when everything was good and now it's horrible, has been said by every single generation of humans.
I agree. There's movies from the 20s/30s/40s where there's hardcore banging filmed -- money shots, the whole nine yards. And they're not super-rare items either. I think when you have little communication of ideas except newspapers and gossip/society, it's easier to keep a wholesome image. Sure, there's generations of more-wholesome/less-wholesome (20s were worse than the 50s, for instance). In the information age, you can't silent the crowd. I think though that it takes away from it all. No longer can Wholesome Wendy think she's a bobcat in the sack with bragging rights because she (gasp/blush) had missionary sex with her husband - lol.
Last I researched, Syphillis still kills.
Not when one takes penicillin... a lot of things will kill ya if you go untreated.