The sexism, it burns.
Not a great book. There's the intellectual smugness, a feeling that the vast majority of humanity is Just Not Worth It. Although the author is able to imagine technologic breakthroughs, he can't conceive of a single piece of art worth the name arising in two hundred years, and everything else is just crap. Mostly plastic crap. There are good drugs, and pot is ubiquitous as the smoke of choice, but there isn't a single new good thing for hundreds of years except the thought buses. Hell, he can't even go so far as to imagine women wearing pants. The smartest human surviving is a woman, but she doesn't get an active role, she's just the passive love interest.
Nonetheless, he did have some very nice things to say about reading, so not entirely worthless.