Hey, it's just nice to have someone else pump the gas. As also stated previously, NJ's got some low gas prices. So what don't people get about the fact that NJites enjoy the situation?

And why does that get other people all worked up???
Well, the OP asked a question, I don't think people answering honestly is necessarily the same thing as getting "worked up".
I said it before and I'll say it again. It's not the fact that you prefer not to pump your own gas that gives off the prima donna impression, it's the crowing about it like it's some special thing with bumper stickers and choosing a candidate for governor based on whether you have to pump gas or not.
I know now that it's a big inside joke in New Jersey, but really, how are other people supposed to know that? Do you know all of the other states' inside jokes?

The OP appeared to be asking an honest question of those in other states and we answered.
As you can see by this thread, public demand here in NJ LOVES the fact that we don't have to pump our own gas.

WE are not complaining about this great benefit - only those out of state seem to think not pumping your own gas is a hardship. Trust me - folks here would not be happy if things changed.
Not a hardship, just not the great benefit you seem to think it is.
Way back when we did have full service pumps in my area (never had the requirement, just the option) pretty much no one ever used them because it was more expensive. This in my home town full of wealthy, Cadillac driving individuals. I don't think I'd ever use them now. Maybe if it was really cold out. Like, 10 below or something.
This is my memory, too. Wasn't it the gas crisis in the 70's that led to self service stations? For a while, every station had two options, self-serve or full-serve. Self-serve was about 20 cents less than full, and over time, no one used full serve anymore, so they shut them all down (and this was also a very upper-middle class to wealthy area). For a while, I remember my mom having what appears to be a New Jersey attitude about it (though she was from Germany)

. She thought it would be smelly, dirty, or hard to do, so she'd go to full-serve. Then she tried it a few times, realized it wasn't that bad and wasn't worth the money to have someone else do it.
Several have already said they pay cash because it's cheaper than credit, I would bet there are plenty of NJites that would go to the self-serve if it were available, because it's cheaper, too. Maybe not those on this thread, and that's fine. Free choice is always better than a law mandating one way or the other.