With proper maintenance, Windows can work fine after an extended duration, really! :Q
I've been running this computer since March.  Still going along fine.  I recently formatted my win2k box (got it in 2000 as win98, upgraded [not format+install, but upgrade] in 2001, and never touched since, with normal-heavy usage)as explorer got fookered, and frankly, the only difference for me was that IE loaded faster.  It wasn't night and day, it was more like finding $1 in your pocket you didn't know you had.  just a teeny little bonus.