When they first came out I wanted to support them, but I'm in Canada - geoblocked. Strike 1.
A year or two later I finally got a VPN, stopped my satellite subscription, modded my ATV2 and started watching. Shortly thereafter most of the content creators pulled their content from Hulu to try and create their own empires. Most of the shows I WOULD watch got pulled and placed onto their crappy services. Strike 2.
In this digital age I want to watch what I want, when I want, and I don't want the limitation of having to try to remember to squeeze in that episode of X before the show expires on Hulu. I missed the season finale of Grimm by 3-4 days because of this expiration model for the show. Strike 3.
Netflix, you get my money. Hulu/NBC etc... you don't, and I still watch the stuff that could have been on your site making you revenue, but I do it through other sources.