Well, I'd have to say it depends. I like live music, especially a band I am passionate about. But I also hate crowds. And I also don't like it when there aren't enough people in attendance, like at a small coffee-shop live music night, because I feel like the band is watching me and expecting me to respond to them a certain way.
When I think of a "concert", I think of a large show, like an auditorium with hundreds or even thousands of people. For me to go to that, I have to absolutely love the band on like a spiritual level. If that's really what you mean with the thread topic, then there's probably only a handful of bands that are both big enough to have such a show and that I'd also go see.
But if the show is at small bar or dance club, I'm usually less demanding on band as I feel less stress with the crowd, and I feel like I can kind of relax and be invisible among all the people. It's less about the specific band and more about just live music while I'm concentrating on other things, like conversations with my friends, people watching, or just drinking. I've been to this kind of show many many times and usually enjoy it or at least don't hate it.
But as the venue shrinks, the importance of who is playing goes back up. I've been goaded into going to live shows for local bands just because I knew some of the band members, and I've never enjoyed it. Instead, I feel like I'm the performer, trying to look like I'm enjoying the music and enthusiastic or whatever.
For me, I think there are two types of musical performances: bands that I can worship, and everyone else. And that makes the biggest difference in whether I'll go out to see them live.