It's also important to remember that touring is usually the most lucrative source of income for the band. Used to be that the record label got a huge percentage of album sales. Now that percentage goes to Apple or Spotify. The money that the band gets from live gigs is pretty much all theirs, after covering the staff and venue costs of course.
I'm philosophical about concerts. I like songs, not necessarily bands, and often the recorded version of the song is impossible to play live for some reason or other. But a concert can have spontaneity and audience participation that a recording cannot. It's a shared experience--moshing at home isn't quite the same, you know?