The primary inadequacy at Hulu is lack of current season programs. So the choice is go pay somewhere that provides current seasons or wait until a few months (or longer) after the season ends to watch the shows. Unfortunately, word gets out about shows to most anyone who goes online or talks to people and I don[t want to live under a rock. In fact, one of the major reasons I watch TV is to share the experience and even when I watch by myself I want to talk to others about shows and characters and stories and waiting months or a year to talk to people about what happens in fictional entertainment is often a let down.
The second flaw is the selection. A lot of shows I would like to watch are just not there.
The user experience is good, especially without commercials. The free month was the reason I tried without commercials. .
I am a newbie to online TV watching so I may update this as I learn more. For now, I like the user experience of Hulu but wish there were more shows as well as more current shows available.