I am 51 years old and have been vegan for over 30 years and in the past maybe 5 years i have come to a conclusion. I think animal based "foods" are powerful drugs. Just like cocaine and heroin. I have known so many people who have gone %100 plant based for months or years and then started back eating just a little animal based foods and within a few months or so began eating animal based foods everyday. Most say they feel better. So they are eating things that are not healthy for them but they say they feel better...this is exactly what heroin addicts say. This is why going plant based fails so many times. If someone quits animal foods for their own personal health it's not the same as going vegan and realizing you don't have the right to eat sentient beings.