A number of people I've associated with in the workforce would say that a Doctor earning £70k a year (or more) would also be out of touch with 'normal' people.
As you noted, I think it's more the value he places on his career that would have been the driver to his comment.
I don't think it's neccesarily the amount of money that people earn, IMHO it's what they contribute into relationships (and by this I mean personal, family, work and community relationships) and how they interact with these people that keeps people grounded and 'normal'. As simongr noted, flying coach or limiting spending isn't going to make anyone more 'in touch'; it may give you more insight into what a difference having available money can make to a person's lifestyle though.
Personal traumas such as you have recently gone through often act as a catalyst for introspection and change, and although the comments noted above may seem a bit harsh I think you're heading down the right track in reviewing how you fit in into the world.
Good luck and please keep us updated!