Expected longevity of the iPad 3?

I was pondering lately, what do you people of the forums consider to be the expected life of the oft-putdown and generally short-lived iPad 3?

I have a 32GB one in my possession, and I do love it dearly, it almost never lags, has a fantastic design (of which I much prefer to the iPad mini-esque newish design) and and is generally quite nice indeed. Despite this, I frequently view various complaints about it, and I'm wondering how long you all estimate it'll be supported software-wise by Apple or ultimately remain useable? Thanks.

Edit: I forgot, for you developers out there, how does iOS 7 run on iPad 3? :)