Been hearing a lot about Patreon(differences?).

I've noticed people on here using Patreon as well as hearing about journalists and artists using it. What makes this service more desirable than donating to say...someone on Twitch if you're a broadcaster, YouTube or Daily Motion? I talked to this one guy who was raving about it, in terms of journalistic coverage.
I mean I've looked at a bit but would be interested to hear why you like it so much.