Actually, now you mention it, maybe not. There i go being prejudiced and spouting off abuse about Microsoft (just cos it's fun) and not really thinking about what i'm saying.

I think the only thing you'd miss if you use it is the networking. If you have your logins controlled by a domain controller so that you can log on to different computers around the house. You can't do that in XP Home.

For a list of other differences, i found an article on winsupersite which always has extremely reliable information:
http://www.winsupersite.com/showcase/windowsxp_home_pro.asp