You obviously haven't been to a gym lately.
While some old fashioned gyms may specialize in body-building (which is not exactly about fitness), working out in most gyms is not done for appearance but for health and a sense of well-being (however fitness does definitely improve appearance).
And so what if a man or woman working out has a gut...at least they're trying to do something about and not just complaining as you are.
It is never a waste of energy if done right and for the right reason.
That said, exercise doesn't have to be done in a gym. The great outdoors is loaded with opportunities for movement, exercise and healthy living.
Here's a great site for folks who enjoy getting healthier and stronger...BTW Crossfit.com.
Crossfit has been adopted as part of the PT effort of the USMC, Navy SEAL's, and US Army.
Who gives a flying you know what about a bunch of gym faggots? I’ve been working out steadily since I was 15- I don’t need to make a big show of it.