So, I reread "Do Androids Dream of Electric Sheep" recently, and started to write up some thoughts for the PKD (Philip K. Dick) sub, and realised... man, that book is depressing.
For instance, at the time of the novel, Earth has had medium-to-weak radioactive fallout for decades, and if you don't want to watch yourself slowly erode (so to speak), you can instead emigrate to colonies around the Solar system. You'll even be gifted a high-functioning organic-robotic slave to help you manage the sheer loneliness of living off-planet. Of course even if you've only seen the movie, that kind of thing can also backfire rather hellishly.
On other example-- Most species are extinct at this point, but since humans still desire pets and need other life forms around them, people tend to invest in some kind of artificial life form... which are still prey to breakdowns, theft and vandalism. Or if you save up months or years of salary, you might be able to buy one of the few living species, like a cat or maybe... a sheep, or a goat. One can certainly see the normal attraction of all that, but at the same time, it also becomes a never-ending obsession for people. They're constantly worrying about the welfare of their pet, worrying over how others will judge them, but also secretly hoping to upgrade to a larger, more ostentatious pet some day... even (or especially?) when that's nothing but a pipe dream.
At the same time, DADOES is still a great novel, with lots of fascinating ideas in play. I think when I was younger, I tended to be more oblivious about the downer aspects, and focused more on the other stuff, such as a really wicked, but still respectful commentary on religious belief.
In terms of the movie, I used to be disappointed in some ways that Blade Runner stripped out so much of the interesting content, but in retrospect, I'm satisfied with how it worked out. Indeed, Ridley Scott created a hell of a great film using only bits and pieces of the novel for inspiration, altho of course keeping the organic-slave angle as the main point. But turning Roy Batty from an overconfident, hulking Mongolian in to what Rutger Hauer beautifully portrayed? Turning J.F. Sebastian from a mere "chickenhead" in to senior designer at Tyrell Corp? Just brilliant. Indeed, all the actors involved were pretty damn superb IMO.
In fact, the bleakness in DADOES is really pretty typical of PKD's work, even as most screen adaptations neatly transform that in to qualities that work well for the format, such as lurking danger, quick plot turns, and novel ideas about how technology changes peoples lives in unexpected ways. It's an odd marriage I guess, but after something like maybe two dozen movie and TV adaptations of his stuff, clearly a successful one.