Why was Adam Harishon a vegetarian? Why wasn’t he allowed to eat meat?
Answer:
Some explain that in an ideal world, we would all be vegetarians, and that the permission to kill animlas and eat meat is only for a world that is not ideal.
Also, the animals at the time of Adam Harishon (before the sin) were on a higher spiritual level than today’s animals (according to Ramchal in Adir Bamaron, they were on the level of today’s human beings), which might also explain the difference.