Meatless Mondays

I want to understand what are the advantage points for having a meatless Monday. Through application, after my ryt cert I dabbled in more meatless meals becoming more of a non- meat- eater than a vegeterian, and I find that I feel better after I eat and my digestive system is healthier. But there are too many "I"s in this for me to offer a better quality of life for people… or is it just me- the “I” did it