I picked up my 60 gig PS3 in August of 2007, right before the 80 gig models came out. It had its moments with Heavenly Sword, Resistance, Modern Warfare, Killzone 2 and All-Pro football, but the moment I'd heard about Bioshock and the upcoming Mass Effect for the 360, I picked up an Elite in November of that year.
When the Wii launched, I really didn't have any interest in the console. The game lineup wasn't meant for me, the enthusiast gamer, and the controller gimmick didn't interest me one bit. The Wii launch reminded me of the N64 launch, just that the Wii didn't have anything worth playing, while the N64 had a nice launch lineup, but not alot more for the first year. I still don't own a Wii, even though the software has become respectable, and I probably won't get one until it can be had for $50.
On the handheld side, I still had a lot of GBA games to play, but I usually don't play handhelds unless I'm on the road, so I didn't pick up a DS. I had an interest in the PSP though, since it was offering a significant graphics upgrade and it could play media files. I eventually picked up a PSP a couple of years ago, and it's been my go to handheld while out of town. I may eventually pick up a DSi XL, but I have no immediate plans to pick up the 3DS. I'm still on the fence about the Vita, but I do like the hardware alot.
My PS3 and 360 get equal playing time. I like the software selection for both systems, and often find that I don't have enough time to play everything that I'd want to for those systems. I also spend about 20% of my gaming time on my PC, so the likelyhood of finding time to play games on a Wii, 3DS, Vita and DS just isn't there, especially when I like to play a few classics from time to time.