Don't let a few friends dictate what you should buy. You'll make new friends on ANY platform, and you can still keep the ones on PS4 if you buy it later on when it's cheaper.
I also agree with what Hlsgsz said on the PS4 controller. The Dualshock 4 is one of the worst there is. That said, I don't really like ANY gamepad. They make you feel all thumbs.
It takes at least $700 to get an adequate gaming PC, but you DO save the difference in price from a PS4 over a few years just in the prices you can get the games for.
The only exception is renting at places like GameFly, but then you usually have access to only one game at a time, then returning vs owning it. Not really the same.
Also, no mods on consoles, which really sucks.