It is a good second best OS I and now that XP probably is getting rather risky on the net I use the WIn7 box for internet browsing and a few light tasks, HOWEVER when I need to do some work I turn the switch and start using XP. I have one box which came with Windows 7. I use an Android tablet for browsing, and a mobile 'phone and Windows7 desktop but these are only for browsing.
The statistics used for 'market share' can be highly misleading as they only show what OS is being used to access the internet. XP has a higher share than you may think.