I'm not a Mac person. This is my conclusion after having owned one for one-and-a-half years. I suppose my issue with Quicken is part of the issue, but I'm generally not very impressed with the whole package. I see myself going back to a PC the next time I buy a computer, probably in 12-18 months since this one isn't very old and is perfectly serviceable. It's just that I'm a PC guy and while I'm not much of a computer person in the end (I use them, but I don't tinker these days), I know what I like and I like PCs.
Perhaps my biggest reservation with my laptop has nothing to do with the Macbook itself, but rather the incredibly twatty commercials and the pretentious air that they constantly project. Yes, you make beautiful hardware and "user-friendly" software, but you don't need to be such wankers about it. (I'm not sure about the goofy references, perhaps it's some British comedy bender that I'm on.) Hey, Justin Long, no one likes you and your wretched romantic comedies.
I dislike how often Safari crashes, the weak software options (Quicken, MATLAB, CAD programs, etc), the one-button mouse, browsing through Finder and general folder searching/sorting/moving about, the non-games (even though I don't have time to play), and the overall anti-Flash stance Apple has taken. I'm still torn on iPhoto since it's a bit of a black hole. It's great for sorting photos, but I like to modify copies, move them about and deliberately save them in different places. Also, while every laptop is going this direction, Apple has fully embraced the widescreen trend that is sort of annoying. Most of my work flow is vertical, not horizontal.
It's not all bad. iTunes is better on a Mac, VLC is not too shabby, and after all, it is a nice looking computer. I'll also admit I have never invested the time to really get to know the Mac system and appreciate the benefits (whatever they are) of OS X. But in the end, I'm a PC guy and while that may change, it just doesn't seem likely.