Go with "which platform has more of your friends using it" and "which controller do you prefer".
The irony with this generation of the console wars is that the fanboy bitterness is greater than ever, but the differences between the rival platforms have never been smaller. Yes, there are some minor spec differences, but for the most part, you need a magnifying glass to spot them. And single-platform exclusives are in decline; the cost of making games these days means that most games are multiplatform.
My first preference would be to recommend "just get a gaming PC", but I'm guessing that's not an option for one reason or another, or that you already have one, but want a console to go with it.
If you want to split hairs, then the PS4 tends to be better than the XB1 for running multiplatform games, but the XB1 currently has a very slightly better lineup of exclusives. The only real "stand out" exclusive on the PS4 right now is Bloodborne, which, judging from your post, isn't really what you're after (though it is an excellent game). That said, Japanese developers favour Sony platforms and if you like Japanese RPGs and the like, the PS4 is already slightly ahead in that category and its lead will grow. But the XB1 has clearly had a better holiday season for exclusives; Forza 6, Halo 5, Rise of the Tomb Raider and Gears of War Remastered, vs just the Uncharted Collection on the PS4.
Funny thing is, the exclusives tend to more or less balance each other out anyway. Gears of War vs Killzone. Halo vs Uncharted. Forza vs Gran Turismo. Though I will say that Forza has been much, much better than Gran Turismo for several iterations now.
As for non-gaming functions, the features are more or less parallel now. Both consoles have been patched with DNLA support, though the PS4's interface for it is rather better. That said, the XB1 can act as a throughput device for your cable-box, if you are short of HDMI ports on your TV. So it's kind of even there as well.
tl;dr version - it doesn't really matter. Neither is quite as good as a decent gaming PC, but both are fine in their own right. Which platform gives you a larger friends-list and which controller you prefer are the biggest factors.