Yes, when it makes sense. It rarely does though, so for the most part I've only purchased games which I can't get anywhere else (Forza Horizon 3, Forza 7, Gears 4 etc.).
I also much prefer installing certain apps such as Spotify from the store, as opposed to getting it from the developer directly. This way it's completely contained, so that when you're uninstalling it wipes every trace of it from the system. This and easy updates is more or less the only thing I really like about using the store.