I upgraded and upgraded the entire office at work, and so far, everything's been fine.

I upgraded it here too. I don't use it much, but it seems to be working ok. When I work on a web page, I open it in IE too just to make sure there is no strangeness with it.

I use QuckBooks and it depends on IE for the stuff that interacts over the web. Every time start QuickBooks now, I get a warning that says "QuickBooks does not support IE7. Please uninstall it and use IE 6 instead." I just cancel out of the warning and everything I've needed has worked in it fine so far.

I think you'll be ok to use it at home.