If you want to use windows, then get a dell or some other manufacturer that's not apple. that's not the point of why apple is doing what they are doing. they're acheiving two things here: first, it's for those who want to make the transition over to a mac (using mac OS X), but absolutely have to be able to use software that runs only on windows right now. secondly, it'll also help those people to see all the advantages mac OS X has over windows XP.
ever tried installing GNU/Linux together with Windows? As much as I dislike Microsoft for its practices etc. Windows does have some great features. This is most noticible when you start using GNU/Linux. While I totally agree on the philosophy behind the GNU system (free software), the current implmentations of GNU/Linux just don't match Windows for actually getting stuff done; for a start, many leading programs just aren't available for GNU/Linux.
I think the same will be seen by those making the transition over to Mac OS X. They'll soon realise the great features it has over XP, and will dislike using XP more and more.