So I restored the stupid little icon, the first step towards doing the upgrade. I have it installed on another computer, but I simply don't use it enough to know for sure. It's either do it, or don't do it. My main concerns are: 1) dying halfway through 2) hating it and being unable to go back.

Also, if and when I do it, if successful of course, I'll then be obsessed and toying with it relentlessly to figure things out.

Oh, and c) that all of my programs still work