Well i've been us­ing a lot of dif­fer­ent sys­tem, Mac Os 7 till X, Win­dows 3.11 to XP in­clud­ing the NT fam­i­ly, Beos, and some lin­ux/Unix sys­tems (in­clud­ing red­hat, suse, irix, man­drake, FreeBSD) and NONE of them have giv­en me "the pow­er of unix" with a graph­i­cal user in­ter­face that looks good and does what I want it to do, OS X does and with the eas­i­est OS in­stall ever, even an un­born child can in­stall Mac Os X.
(small note OS X has it's flaw but the oth­ers have (much)more )

In Short:
I hate spend­ing days learn­ing how to use an op­er­at­ing sys­tem, I hate search­ing for set­tings, I hate re­boot­ing, I hate edit­ting plain text con­fig files, I hate MS soft­warem, I hate ugly and not work­ing GUI's, I hate GIMP's GUI. I hate a X num­ber of CD's / DVD's in a pack­age with soft­ware that is out­dat­ed or that i'll nev­er use in my en­tire life !
I hate in­stalling, I hate com­pil­ing.
I hate soft­ware in gen­er­al, and I think 90% of the soft­ware en­gi­neers and pro­gram­mers think like this
"How can i make this piece of soft­ware in no­time at all, with the least amount of ef­fort, and cash-in, and damn I can even earn more if I drop the (in­ter­ac­tion-)de­sign­er and do it my­self"

And I think if all those lin­ux hack­ers start work­ing on my hate list and user-ex­pe­ri­ence and do­ing things dif­fer­ent (in ease of use and graph­i­cal­ly), they'll be work­ing on a sys­tem that has the po­ten­tial of becom­ming much bet­ter and su­pe­ri­or to win­dows or even Mac OS X.

Steve is right his OS and soft­ware is the best for now, and if any case-mod­ders, hard-core PC-gamers, lin­ux hack­ers or some­one else is of­fend­ed, think dif­fer­ent , and cre­ate some­thing that is even bet­ter and for free.

Even if OS X is the best OS around, Ap­ple shouldn't dis the work of oth­ers based only on what brand of proces­sors they used, es­pe­cial­ly when Ap­ple choos­es to rely on that work. An open source OS won't be "bet­ter" than Ap­ple's be­cause open source al­lows Ap­ple to use the Good Things from it in their prod­ucts. That's be­cause open source is about im­prov­ing the world and Ap­ple is only about im­prov­ing dull lit­tle share­hold­er val­ue, and a lot of mar­ket­ing crap to do that and pre­tend it's any­thing dif­fer­ent than Mi­crosoft, Dell, Sony, etc.