You've never camped in alpine areas ? air bed is like a fridge under you ,There are always trade offs in these things but I have to admit I like foam myself.
Yes its bulky & hard to roll up but I get the best sleep out of it.
I just don't find a self inflator has enough depth & density to support me without then being like a brick or everytime I turn over part of me hits terrafirma.
Recently upgraded from a wild country swag(that I had a 100mm foam mattress in) to a Kings big daddy deluxe.
Very happy with the way I sleep now when I am in the bush but yes it is big but I am willing to sacrifice room in the ute for that or even put it on the racks if I have to.
When the 70mm high density mattress starts to droop as it will with time I am going to try a Coleman inflatable.
Will take up less room than a foam & a self inflating but just need a 12v pump or even use your mobile 12v compressor.
Its your comfort in the end.
it was too bulky to roll up with the swag , so doesn't matter which way your rolling it up .