It is technically a bit cheaper in the long term and it give a somewhat better business class rating. But as you said it is a big bragging point.
I agree in principle (i.e. value to your operation is money-wise limited), but in the end, isn't everything a bragging point? Number of planes in the fleet, number of destinations, being the #1 in x different airports, exceeding x million passengers etc? It does add a level to the simulation, and I hope that one day, there will be real consequences to overbooking terminals, just to make it again a bit more challenging. So, as such, to me it is an integral part of making the most out of Airlinesim.