Yep, and many blokes in the forces do... because we know a little about the subject.
What if you were last doing PT at a school with no playing fields? Or a school that didn't allow the kids to run outside of the grounds? I remember my school had a cross country route tht was off site, but I haven't seen kids run the route for a while (admittedly I don't live in thearea).
We have to remember that a lot of the civpop don't have the same mindset or training/experience as us. Fear of the unknown and all that. You wont find many people who'll just pull of a pair of trainers and go for a run if they don't know much about it.
A running club or group provides assistance, experience, advice and all that good stuff that even a good trainer shop can't provide.... ditto for other types of groups.
Man is indeed a social beast.
As for all this pish about 'accidentally' getting fat. PTIs the Army over and others may give you the impression that to be fat is a choice and just a product of being lazy... it is not.
Some people react to stress in their lives by controlling what they eat, some exclude food and get thin (anorexics and bulemics) others go the other way.
Why do you think people eat 6 Pizzas a day? Routine and control of factors that they can do something about... or is it just because they choose to?
If you want to see why we should be getting a grip of these people, watch Big Body Squad on Ch5 tonight, you will spend an hour shouting at the TV and just wondering about the cost of keeping these people.