I totally agree.*
We have to remember that Schoenberg, Berg and Webern were highly trained in classical and romantic harmony, and Schoenberg taught composition and wrote importent books on composition. I mean, it's not totally atonal and dissonant, those guys knew exactly what they were doing. It take years of training and learning to get to their level. Even if you dont like it, you have to appreciate them.
*Actually, I would rather listen to a Wagner opera then to Woezzeck, but it's still a very importent and strong opera.