Because I'm a geek that wants to have some access to the inner workings of his computer that does not cost a fortune for a fraction of the power purchased compared to PC. Mac has always made a point of leaving the users on their end of the keyboard and not letting them sneak behind the curtains, so to say, while having them pay top dollars to have a pretty piece of furniture on their desks. I never cared about that. Nowadays, hmm...I don't know, but habits are hard to shake off.
I come from the C=64 and Amiga days, you know. Apple always had been a privilege to power consumers and not an invitation to power users for that matter.
But I don't want to start a senseless argument here, of course. Nobody has really won, even if mac pushed hard to get musicians and artists on their side quite successfully so. Due to their high prices early on they were also not as wide spread as PCs or other machines. To have a strong exchange community one would better have been on a PC. ON and on and on goes my arguing, hahaha...sorry.
But, yeah, I still want to find a way to compile for OSX directly. Without any funding for the project I would have to sneak around and see, if I find some way to do so, but I won't invest my money beyond the time and efforts I'm already investing, if you can excuse me for that. But time is therefore the other handicap as I only have limited "spare time" to develop Verve as it is. Once I finish my current projects I will have more time again, but then it may also become interesting to actually seek funding for the development. I keep saying it, but I'd really love to dedicate myself completely to Verve!

Thanks for asking and thanks for letting us know about Wine. I've heard conflicting reports about that. I've only heard one clear confirmation that bootcamp allows a proper running of Verve on a mac machine.