[Mithalwen]

Unless by sober you mean teetotal I don't think it is analogous. Sobriety is a state which fluctuates for the individual usually, on a continuum from those who never are never the least intoxicated to never not. Unless you are a total abstainer or incipient alcoholic it will vary. Vegetarianism is a way of life a perpetual state through religious or moral conviction or necessity.

Fact is that choosing ones diet is a luxury not available to many people throughout history or even now in much of the world. People ate what there was and didn't waste it. Modern food waste is pure decadence.. we fly out of season food round the world or grow it in artificial convictions and then often it is left to rot.

I think many think elves might be vegetarian because of their affinity with animals. However we know they hunt and they use wood though they love trees too. If you look at Legolas' comment about the orkish love of destruction then it seems to me that they would eat meat as they use wood. Not killing more that they need and eating "nose to tail". It seems inconceivable that they would hunt merely for sport.