I guess I don't really care who the "champion" is. I don't care about the NFL playoffs, or the Superbowl, or the world series. If you're playing the entire season just to figure out who the champion is, what's the point of playing all the games? Just have a playoff from day 1. Which is exactly what college football more or less is. The regular season in every other sport is exactly what the bowl season is in college football. The playoffs give meaning to other sports in the same way that the regular season gives meaning to college football.
I haven't watched more than a few minutes of any NFL game this year, but I've watched every single college game I can find time to watch I'll watch, because every game is meaningful to and in the landscape of college football.
If NCAA D1 football was 30 or 40 schools with a 20 game season, yeah a playoff would make sense. With 120 schools playing 10 or 11 games, though, trying to find any fair way to determine who the best 8 or 16 teams is to even begin to see a playoff bracket is impossible, IMO.