Sure, you would subside people flying with luggage. It also reduces the time planes stay on the ground, stops the fighting between passengers for the always full luggage bins, clears the seats in case of emergency, and eliminates the largest hidden fee companies manage to put on their prices.

Anyway, the fact that you just assumed I personally fly with luggage is weird.

A piece of luggage is on the same other of magnitude as the variance in human weight so either way there is plenty of "subsidizing" going on.