Good point about anxiety not being a nice way to live. I'm sure my son would rather just run down the hall to his room to get something rather than needing his mom, dad, or little sister to come along. We get frustrated with it from our point of view, but it must be tough to be him. He won't use the bathroom alone at school, either, so only goes when someone else needs to as well.
There have been times when we have suspected that he simply wants someone to talk to all the time ...probably, though, both are true.
I tried yesterday to really reassure him we are qualified to keep him safe. He said, "I am not sure you know what you are talking about." which led to a long discussion of whether there was anyone who did, in his opinion. He said he thinks he is the only person who really knows what he is talking about.
Perhaps I should look for a therapist. He loves talking about concepts and theoretical ideas so he'd probably like it.