I still find the Start screen and some Metro apps very useful.
I am still looking for a useful Metro app. Can you share which ones you think are useful.
That will be pretty difficult without knowing what more you want to be able to do besides run normal Windows desktop programs.
I much prefer the built-in Mail app to any desktop email clients I've used. I love Metromail for my Gmail accounts. And it's great that 10 brings notifications to the desktop for apps like email that know how to do them.
The built-in People app is great for my sync'ed Gmail contacts. What's best is that I only need one contacts database to service any apps that require contacts.
I do Twitter and Twitter's native Metro app is as good as the Android version.
I like The Weather Network for its live tile at a glance. But I also like all the rest of its features. The OneNote Metro app is very good. And there are a couple of time wasting games that I favor. :)
If you have become spoiled by the things you can do in a mobile environment llike Apple, Android, or Windows Phone, as I have, you should be able to figure out what parts might transfer well, for you, into a desktop context.
If you don't find anything in the mobile environment to be compelling then - and I say this with utmost sincerity - you probably will never find much of interest in Metro apps. Metro is, after all, about mobile. If you don't get mobile or it simply holds no interest, you won't likely find value in Metro apps. No criticism; just the fact that we all have different needs and interests.
...ken...