Dear forlorn,
It's 2007, wake up! Fidelity is not so much a virtue anymore. Have a taste, take dalliance among the big and small flyers out there. Our esteemed free market wouldn't be so free is everyone is bound by their buying decisions made 30 years ago.
In time you may or may not discover that the grass is greener on the other side, but at least you would have gone to the other side, "played the field" so to speak.
"Ann"