For me, foraging is a source for food and a way to build community - if I find food growing wild and forage, I'll often have more of it than I need, which means that I can share and trade it with my friends and loved ones. I did that all summer this year, because there were so many blackberries growing wild along my route to work. I would stop and fill up my pockets every time I biked to and from. 

It's amazing to me, sometimes, how much these sustainability initiatives can revolve around just doing the routine boring maintenance tasks that it would otherwise be so easy to put off. 

Caring for my health lets me be more involved in my community and care for the people around me. It's the classic principle of "putting on your own oxygen mask first."