I have a Navion and prefer doing the fueling myself. Self serve pumps are cheaper, generally open 24/7 (I do a lot of flying in late afternoons and early evenings) and while line guys are generally very careful it is MY paint job and MY tip tanks that will be scuffed if they goon it up. After wincing watching some guys manhandle my plane I generally opt to do it myself now.

So--watch out--you may find pumping your own gas gets addicting. At the least, it should save you some money.