Pretty much like it does now, except there'd be a lot of people spending a lot less time on the Internet. It wasn't that long ago in the United States that porn was banned. In 1953, when Playboy came out, that was a huge deal, and all it showed was women's boobs, not even women's genitals, let alone sex. Until the 80's, pornography that showed sexual penetration was illegal almost everywhere in the United States, but even after that point, it was expensive and fairly hard to find. It wasn't until the 90's and the Internetization of America that it became commonplace, and in the 90's, it was hugely controversial. The United States very nearly banned pornography on the Internet, which resulted in a huge freedom of speech movement where websites all changed their background color to black in support of non-censorship of the Internet, in support of not banning pornography. It was such a huge movement that in the mid- to late 90's, it became strange to see any webpage that wasn't black, and that movement won out and porn didn't get banned. So if porn weren't everywhere, life wouldn't be too different. Life today, aside from cell phones and Internet, isn't all that different than it was in the early 90's. That is to say that if you were to take away people's cell phones and Internet, what you'd get is basically what life was like in the early 90's, which would be a fairly pornless world, a world where porn was still banned in most places across America.