Ha, pretty much point for point, my story too (except about 5 years from the Dell). I've had mine for about two months I think. Found it a bit weird at first, but I was helped by the fact that i've never been good on computers, therefore, I'd never dug deep into the operating side of Windows. If I had, I'd probably found the whole switch much more challenging.
Really liking the Mac though. Easy controls so far, & the screen definition's fantastic. That's a big help for a failing fart like me. Duncan's been a real help on the Mac stuff too. There's a lot I can't do yet, but there again, there always has been.