I can't blame Microsoft for it, but the app-gap between WP/WinMo 10 and Android is getting untenable for me. I'm thinking about switching back, not because I think Android is better (I don't think it is at all), but simply because I'm starting to feel left out when all my family and friends are using, e.g., SnapChat to keep in touch and I...can't.
It particularly riles me up that there were perfectly functional third-party Windows Phone Snapchat apps, but Snapchat demanded that they be removed and still (evidently) declined to make a WP app.
Not to pick on Snapchat, it's not an uncommon story.
If I could even just download the Snapchat APK and sideload it on my Windows phone, that'd be enough for me. But I can't, since Astoria got killed.