I have an imac at home, and use PCs at work.
Each have their advantages and disadvantages.
I really enjoy the imac, it may be partly because I do FUN stuff on the imac like make covers for cdrs, surf the net, write a few things, etc. AND NOT WORK STUFF. The imac seems more relaxing. . . but again, it may be because I'm not WORKING AT WORK with it.
My wife uses Macs at work and at home, and if we were to buy an additional machine at home, or replace this one. . . it would be a Mac, she probably wouldn't consider a PC and she would win the election over choices. . . she has more votes than I do.