"I've decided to become a vegetarian."

"And how's that working out?"

"Oh, I still eat flies, but I don't like them any more."

My proposal, in American English. (a) Nobody decides to "live as a vegetarian"; it's "to become a vegetarian"; (b) "А как?" would appear to be colloquial for the translation above; (c) "dislike" works best, IMO, for "отвращение" here.

Cheers...