The fabulous and fragrant James Ferman (head of the BBFC from the early 70's to the late 90's) used to blather on about working class people not being trusted/allowed to watch horror/explotation etc, because it was "bad" for them, whereas a middle-class, university educated person should be allowed to watch that stuff, because they "understood" film and were "cultured". I think you can also see Jimmy Ferman's "thinking" being applied to porn/erotica too - "tasteful" porn/erotica is OK for educated middle-class types, whereas yer regular porn/page 3 etc is "prole fodder", and should be banned in order to "save" the working class.
My own take on page 3 and so on? I don't care for it myself (ditto with lad's mags), but that stuff seems to be popular still, so I'm not minded to say "bin/ban!" to it, even if I think it's pretty dumb on a strictly personal level. As for porn - well, online business means that porn is here to stay, whether people like it or not, and I personally don't have any real issue with 2 fully consenting adults (preferably 21 years old+ for me) being filmed having sex (gonzo stuff I definitely find more problematic, though). But, y'know, porn ain't ever going to be a substitute for the real thing!