Lol being a vegetarian would seem an unhappy life for me but I respect vegetarians the most.
For me, once you are eating any animal be it chicken or fish it makes no sense if you despise the habit of eating a dog or cat.
Some communities by the sea here treat fishes like a god and are against anyone eating fishes.
Like I said, it really depends on your society, how you were trained or brought up.
I don't eat dog or cats though but I know I can't live with them or treat them as humans.