Don't have a Genesis never did. They never really took off over here (UK) but you could still get new games in high street games stores, up untill a couple of months ago.
I do how ever have: SNES, PS, N64, DC, PS2, and a *fanfair* Binatone 8in1 with the turnie paddley things.
I never used to be a console person (save for Zelda on the SNES), untill I came to uni and started playing them with house mates. The one big thing I think consoles have going for them is easy, sit round the living room with your mates, multiplayer gaming.
A lads night in, with beer, take out and micro-machines, can not be beaten.
One player games are better on the PC tho' IMHO.
/me is still eagerly awating a euro release of PS2 Linux *drool*