Seriously, if her not liking meat bothered you enough (like, you love BBQ and she won't go to a BBQ place), sure, nothing shitty about it. Unfortunate, maybe.

I agree with the other person: if something about your partner really makes you unhappy, you have every right to end it with them. If you do that over trivial stuff, you're going to be lonely, but you aren't obligated to be in a relationship with anyone.