@MrWilde I ditched the desktop last year when I got my MBP and it was the best thing I ever did. I used to be so tied to the machine, and being able to just pick it up and go somewhere is awesome. Having a desktop and a laptop was always just a nightmare, as I could never, ever, manage to keep files in sync, and I've never been a big fan of webmail - Outlook just works for me, as I have about 10 email accounts for various projects, and there is NO good email client on the Mac, period. My VBA rules manager also helps loads :P
The other main reason I went to the dark side was Macbook Pro itself - it's simply the best laptop. The responsiveness of the trackpad and gestures in OSX make working on the road almost as productive as being at home, on a desktop, with a mouse and 2 screens. Honestly, unless you've tried it, you simply can't imagine. It's a HUGE achievement for Apple, and one which so far, Microsoft nor any other Windows manufacturer has not even come CLOSE to emulating. The battery life is astounding as well.
However - I've been reading very good things about the new Precision Touchpads, and the latest 2015 Dell XPS13 is in my sights to test out. I had a 2015 model, and the trackpad was the single-most appalling trackpad I'd ever used. About 20% of touches would simply be ignored, and I had the thing replaced by Dell, so it wasn't a fault, it was just Dell/Synaptics saying "F*ck you, we can't be bothered to make it actually usable, live with it". However, if the new touchpads are as good as they say they are then it might be time to come back to Windows.
@ohffs I LOVE Windows 10! There are some rubbish things about it (Settings, Start Menu) but the things that actually matter (not Settings), or can be tweaked (Start Menu), combine to make it the best operating system I've ever used. It is so, so, so easy to manage windows, apps, files, and just makes you so productive. I haven't really noticed all the bling stuff you mention, and I find that the entire Adobe suite seems to run better on Windows too.
I'll be sticking with Mac probably for at least 6 months, and perhaps by then Dell will have brought out a new XPS, and maybe they'll have put the camera in a sensible place!