I've tried to preach this truth for decades. What I've found is that some people just aren't into gardening. Now I spend more of my energy teaching people about foraging. There are quite a few wild edibles in my area, and people who know what to look for can keep their bellies pretty full without ever planting a seed.
please share these plant names. Many thanks.
I talk about several in this post and in this post. Eventually I hope to finish out this series to include plants for every season.
There's also a great online resource at Eat The Weeds.