I've honestly been appreciating Gmail more and more. I find their interface to be innovative and quickly becoming more and more streamlined and minimalistic. I love the new editing. RARELY do I need complex formatting, so their features solve my 90% needs well and sure I hit a bit of frustration 10% of the time when I need a feature i haven't used before.

With recent innovations I have less and less reason to use dedicated desktop apps. I honestly love every aspect of gmail.

The worst ATM is that desktop clients don't support the multiple inboxes that gmail introduced, so most clients think i have a ton of unread messages. So i wish google would come out with some desktop clients with multiple account support.

Edit: I usually see my email appear in my android app before I even see it in the desktop.