He's really against living in a dorm, especially the shared space. He likes his comfort/privacy. Single dorm rooms are available and they don't cost much more, so that might be an option. Personally, I think he should get over it, but they have their own opinions at this age.
I never had the living on campus experience, and it's something I wish I had, but I think living on campus would be great, for many of the reasons mentioned here.
I'm warming up to the idea to having him to live on campus the first year. We live close to the UW, so even if he wanted to come home on the weekends, etc, it wouldn't be a big deal. Of course if he goes to UBC, then he'll have to live on campus.