> All I do know is that if they were to stop rearranging seats, it would make the frequency of our flying go down quite a bit.

I don't understand this. When you book a flight, do you not chose your seats so you sit together? Why should it be up to the airline to ensure you get a seat with your baby, that is part of planning a trip.

When I rent "the cheapest car on offer", if it is a 2 seater, and I have 3 passengers, that's on me for not planning for my passengers.

People who chose to not pick their seats (to save the $25 or whatever) shouldn't then punish people like me who paid to sit in a specific seat with specific neighbors.