You know what, I love my MacBook Pro but it's definitely not worth the price tag. I consider myself a tech savvy guy so people who say OS X is this and that, Windows doesn't do this, looks like that, I pretty much laugh at because the annoyances that you find in Windows can be taken care of and you can probably find a similar annoyance with OS X. With that said, I purchased my MacBook Pro because I planned on doing specific tasks that can be done just as well if not better than on a Windows machine. I don't consider money a problem, but the truth is, you can find a computer with similar specs for the same price or even cheaper.
OS X lacks a registry, thankfully.
The Windows registry:
* gets bloated over time (it can be cleaned but cannot be compacted)
* cannot be compacted due to how Windows runs
* is stuck in a file system that's prone to fragmenting data (fragmented data = slower performance and greater chance of corruption)
OS X isn't perfect (e.g. no H.264 video acceleration for ATi video cards), but having used both, with Windows versions dating back to 3.00 (and its competitors of the time), Windows was, is, and will always be a technical, dilettante joke.
You can find similar hardware specs cheaper, but those companies add in enough trialware, crapware, etc, to not just subsidize the price, but to litter up the registry (and how often does one want to "optimize" their "system performance" anyhow). (some systems don't have crapware installed but that's due to multi-volume licenses bought by the OEM.)
Give me a choice between a Dell Precision and a Mac Pro, I'll go Mac Pro every time.