Mrs. kaukau and I will gladly switch meals with any fellow F pax who requests so for the following reasons:

1: We fly often enough to burn through the 3 offerings so as to bored with them until the next menu change.
2: We are subsequently showered with service for being so magnaminous.
3: The FA's avoid eating the stuff, mostly. Even the F meals. They know that airline caterers are notoriously in violation of local health department regs.

Documentation:
Federal Disease Control Officers raided GateGourmet's Honolulu facility in early 2006 and came within inches of shutting it down for the most disgustingly egregious violations in recent memory. Seriously. Too gross to repeat.