CO Coach is worse than other airlines (particularly AA) purely in terms of physical product. Ignoring food (which we almost never get out of MCI anyway - too many short-hauls), CO coach is simply cramped. The longer the flight, the more important that becomes.
Given equal prices and a no chance for an upgrade, would I pay for an F ticket on CO? Absolutely not. But, I would pay for a coach ticket on AA before a coach ticket on CO. The extra space is worth the lousier service. It's the free upgrades (on CO, NW, and HP) that keep me with CO, not the coach product.
(edited to correct grammar - CO coach is worse than other airlines. It is not worst).
[This message has been edited by happymob (edited 01-19-2001).]