Social Connectivity - Agreed, too many people you wouldn't push away from a car coming at them, but the real thing, and it was just as much when I was a kid as an adult -- leave me the hell alone, it's a fun escape, I don't need to be followed by annoying pigs and douchebags into my ME time. Go away.
Economics - I see no point in buying new games anymore unless it's in that under 10% I know I would damn well enjoy and replay, like an Uncharted title, God of War, or something maybe Nintendo made that doesn't pale compared to their past works. Games other than NOA ones they either bomb or overproduce upon will drop $10 within a week or a few, double or triple that time figure $20 off, and if the game wasn't super popular it'll be 50% off in about that time. So unless I can get a stupid deal up front, why should I care not to wait? Throw in their economics of selling beta level games with patches, all the forms of microtransactions, and the fact there are still plenty of ownable download or physical games that cost less modern or past the motivation is nearly dead.
Time - I've said it enough, I work 8 hours, then I'm off around 2 or a little later, then my kid is up and you think I can game around that unless she's neck deep in Disney Jr, My Little Pony, Horseland, or the Carebears? NO. She's down at 7 if we're lucky. That leaves me until 11-midnight to do stuff before I want to wind down for bed no later than 1am to be back up at 6am the next day. 5 hours where I need to take care of something, lose a headache, play a game, do Lego stuff, read something, catch a DVR thing from TV or a movie -- and that's if the wife isn't lost in her world wanting to do something (usually watch recordings.) I'm not going to piss the few motivated hours I have left on stupid crap games. I don't care if the media liars and fanboys froth over X game, if I found the truth it's a fanboy pool of kool aid backed high scores, I'm going to be pissed I wasted my time so I don't bother. I'd rather waste a few days researching new and old stuff and finding things I will want to piss my limited time on. Given the time it takes to fire up a PS3/PS4 game, get through the loads, the screens, and the rest it's annoying. Throw in the fact most games now really need you to be at it for an hour or three to feel accomplished or get somewhere I just don't fucking care. I'll fire it up 1 maybe 2x a week and commit a few hours to a game (recently Uncharted 1 on the PS4) to knock it out, but I can't do that daily.
The genre thing you put there, I'll just file that under my lower comments under TIME. Genres of the 2D era are greatly not in favor anymore, hard to find something to enjoy, so you do with what's new and that leaves few options other than the research and finding an old thing to tinker with. Sucks but it's better than just quitting.