It's not even nice. People ate meat because fresh fruit and vegetables weren't available all year round or even at all. All good food has plants to make it taste nice. You can easily just skip the meat and go straight for the flavour.
As a whole, more humans are medically biologically incompatible with plant consumption than animal consumption.
Note that I'm talking about adverse medical reactions that range from worsening of chronic disease to acute death, not merely gastric discomfort, like with lactose intolerance.
Not everyone has the privilege of enjoying buttered cabbage.
Humans eat animals because they are a denser faster nutrition than plants. More bang for your buck. Trying to act like humans “only eat animals because” is ignoring reality.