MacOS X vs Ubuntu- A Personal Assessment

Copied from my Slashdot journal:

Here's my problem: I use macs at home. Ok I admit it, it's not a really problem because I believe it's the best overall user experience for me. Even if I'm a heavy open source software user (and sporadic contributor) and enthusiast, I still haven't been convinced Ubuntu is ready for me. I don't have a lot of Ubuntu experience despite using Debian at work, but Slashdot users do! I don't want or need a flamewar, I'd like to get your informed feedback. I wrote a short personal assessment of why I stick with Macs instead of switching to Ubuntu right away. Where I am wrong? My short text quickly looks at the software I, and any average user, use on a computer: email (Apple's Mail vs Thunderbird / other), Spotlight vs Beagle, etc. To reassure Ubuntu fans, here's an extract: "I found this interrogation from one of my colleagues, "will MacOSX forever stay more advanced than Ubuntu?". I tend to believe the answer's no and as a consequence, you'll eventually see me use an open source operating system on my primary computer at home. We're not just there yet."