yeah, if you can't learn to use normal behaviour and design ideology of any todays os: having windows..
i won't comment on the goodness or badness of windows on itself (i would not use them, if i'd create an os..). but in an os having them as a base for the gui, you normally have the best expirience if you use that feature, too..
at least my os is designed very well to utilise those windows in a handy way.. no need for the mouse or anything, very quick task-switching..
this is not a flame war. this is an ideology war. i never got around the use of tabs really. they collect together windows of the same app. i don't need to collect them. else i have to manage a 2 level tree of windows in brain, to know where i want to go to. having all in one collection is much easier to navigate. thats what the taskbar is designed for.
then again, i'll use it for my app as well.. just because its so simple to code:D