So instead you pay $900 for something that doesn't work right either, and then you "make fun of me" on a social news site.
Clearly you win!
I don't think I'll be able to convince you of this, but proprietary apps are usually more polished than the open source counterparts. I'm talking about every sense of the word polish: usability, reasonable bug levels, compatibility, etc.
It's not that open source is bad. It's that for-profit software companies pays programmers to polish the apps in such a way that open source programmers aren't intrinsically motivated to do (real usability testing, compatibility, etc.).
You say this like it's a fact. Could you cite a source?
(I like your "compatibility" argument. The other day, we received some Word documents that crashed MS Word. OO.org opened them just fine, and the version exported from OO.org didn't crash Word anymore. Clearly Word is more polished, which is why it segfaults on invalid input.)
Like a research paper? No, I'm afraid not. All I can provide are similar anecdotes like you provided (except for the opposite argument).
http://wiki.archlinux.org/index.php/CMYK_support_in_The_GIMP
That makes it unsuitable for working on anything that's going to be printed.
Well if they weren't they'd already be dead & you'd only know of the open source version. It usually takes a different business model (eg opera), or microsoft to prop up an inferior proprietary product. And opera's pretty much dead.
But that doesn't mean it has to be a proprietary commercial product either. See MySQL, Firefox, SugarCRM, etc.
It's worked fine from day one through to today and I've not had to torture myself with mysterious config file adjustments every time I upgrade my o/s.
The hassle saved has been worth every penny.
Pixelmator's got the sort of interface I wish other image apps had. That's my standard, and it's payware.
I'm going to blame myself for being ignorant, though, rather than insisting that the software is the problem. Clearly it's not.
I don't hate Photoshop's UI. (Where was I critical of it?) I dislike the Gimp's user interface very much.