Not a fan. Almost everyone I know has stopped using Snapchat. Its servers are god-awful - don't work 50% of the time here and people have got tired of seeing friends' sushi pictures & selfies 24/7.
Also, choosing not to support Windows Phone (and apparantly not even recording WP users' requests) is a really stupid move in my opinion.
Furthermore, I see no reason why Snapchat should be preferred over Facebook Messenger. If you want to share a moment with a friend, you might as well share it for more than 10 seconds. Messenger always works reliably for me. Snapchat doesn't. Case closed.