Microsoft is their own worst enemy. My wife can't transition fully from XP to the Windows 7 PC I built for her, because it doesn't have Outlook Express or any reasonable substitute. We can't upgrade the living room PC because Windows 10 doesn't include Media Center.

I'm also not fond of the way Windows 10 updates are so aggressive, you'll essentially be replacing your OS every so often without any say-so. If I had any faith that this would be painless I might be tempted to try it, but see above. Windows 7 is darn near perfect, you can pry it from my cold dead hands.