It's not a binary option. Raising the limit at a moderate pace, so that fees don't have to increase a substantial amount with increasing adoption, is a middle ground solution, that will lead to average fees remaining affordable but not-zero.
There are quite a few constants in Bitcoin that one could argue with, that is what we do. It is however important to do it for the right reason.
Avoid paying fees is not a right reason.
It is rather difficult to substantiate an algorithm that would set course for the future, given the huge amount of unkown parameters a constant we have is preferred by occam's razor.