I currently have a Wii and until recently I had an Xbox 360 Slim as well.
Was clearing out my collection and the 360 was the first to go as I was the only one playing it. I did keep the Wii though as my kids and wife love to play on it too.
I still have my PS1, PSP, Dreamcast and Gopher (look that one up - it's a handheld megadrive/genesis with built-in games) and an old skool Win98 PC as well as the Wii.
I can't say I miss the 360 as it's freed up some time to play the other consoles and also gives me more time to get soundly beaten on Wii bowling by my daughter