Replacing fast food with healthy food is good, but we should all be trying to cook more, and be with our loved ones (or hell, even roommates) _more_, not less.
I'm a huntsman, and I can report that I feel most like I'm being true to my natural self when I'm stalking birds across a prairie. It's a communal effort: my friends are arrayed in a line to either side of me, and often we have a dog or two running back and forth before us. Each of us helps & supports the others, driving through the field, helping cross fencelines, contributing thoughts on how best to approach a particular stretch of land. And yet it's also intensely individualistic: you walk forward, gun in hand, eye halfway to the horizon & ears tuned to a few yards ahead, ready for the rustle which indicates there's a bird in the brush.
You think — or at least I think — that this must be how our primitive ancestors felt: together, and yet apart, each doing his own best and each supporting the others in the common cause of getting something to eat.
Compared to that, buying a piece of meat or a piece of pseudo-meat in the supermarket is nothing.