I’m surprised that no one’s mentioned the elephant in the room which is Microsoft’s obnoxious policy of forcing updates on users without their consent, and collecting telemetry and other data from users, again without their consent.
If you don’t care about privacy, and are OK with a faceless corporation remotely accessing and changing stuff on your PC whenever they feel like it, then a de-bloated Win 10 is perfectly fine.
However, for everyone else, I’d say that Win 7 is the better option (assuming it runs on your hardware).