I'm not quite sure how to feel about this.
Even if it didn't harm any living animals, eating meat would still feel plain weird.
Quite a lot of comments against veggies here and how we have nothing to complain about but it's still an odd situation I think.
The closest way I can think of describing it, is say that every time you ate an apple, someone kicked your best friend in the face. Scientists invent an apple that doesn't kick your best friend in the face. There's still that negative association there that makes you feel bad about ever wanting pleasure from an apple, even the non-face-kicking variety.