my parents used to force feed me salmon and i fucking hated the shit, i would literally cut it up into tiny pieces and swallow them with water like pills because that way i wouldn't have to taste it.
now i eat it twice a week, because i grew the fuck up and realized they were doing it because it's was extremely healthy for me. quit being a bitch
also all life on the planet evolved from single-celled organisms, so just because you're a vegetarian doesn't mean you're not still eating a distant relative. and plants, while not sentient, DO show signs of instinct such as defense mechanisms, stress responses, etc.
unfortunately, in a modern society we can't always let the fucking cow roam free in the fields, let it grow up and enjoy its cow life, then smoke a peace pipe and perform the sacrificial ritual and afterwards pay a tribute to the cow sky god and give thanks to the cow's soul so that the cow might grant us its blessing and proceed across the river styx into cowhalla.
if we did steak would cost $200 bucks a lb. ain't nobody got time fo dat. as long as we aren't putting any species into extinction or destroying ecosystems, i think that's respect enough.