For me, I'm at 1G service right now. I think my current provider could give me 1.2G if paid a bit more. I wouldn't mind the convenience of turning ~15 minute downloads into <10. But I agree, it usually takes longer than that to get our family of 4 into the room ready to hit play.
I had been considering changing service providers from WoW to AT&T Fiber, but that would cap me at 1 Gbps again. I don't think they go any higher here yet. On the plus side, the 1.2G service from WoW comes with no data caps.
Changing over to 2.5G level networking would be a little involved right now, and I can't get that level of service anyway. But that's now. It'll be a different story before long.