The most difficult thing to adjust to not having?
I don't think there is any technology that I can't do without. I know how to live well, and how to get by on practically nothing.
It really isn't important that I may miss something, but that I can get along without it.
It would probably be more difficult to adjust to not having a microwave oven than just about anything else. Still, I know how to make a fire and live in a tent if need be. I actually love roughing it.