I've been back and forth on vegan and carnivore diets for 30 years, and many times online since 1998.
Uny is a blood type O, if that matters to you, and so am I. I ate animal proteins with each meal for most of the last 11 years. Last fall I cut back to one meal per day of animal protein. This time I really feel I may always be a vegan, or 95% vegan that may eat raw milk cheese or eggs with one meal a week.
I think many people go back to meat for the wrong reasons. I did. I think veganism can be done right, and if this way isn't right, there is no right way at all, IMO. If Uny doesn't make a believer out of you, no one will. :)