I'm a vegetarian (I suppose lacto-vegetarian would be appropriate).
I try my utmost to live by the "Least Harm" principle.

"Nor the flesh of beast nor bird..."

There's a great deal of interesting discussion surrounding the ethics of food.
Here are some intriguing essays from which to draw your own conclusions:

https://uvearchives.wordpress.com/2008/01/01/contrasting-harms-vegan-agriculture-versus-animal-agriculture/

But cheers to you for making the effort not to feed into the modern capitalist-food-complex that is so horrifyingly destructive and cruel.

I think ultimately if you do decide to eat meat, then you should learn from whence it proceeds.
As in: "Eat Locally".

Visit a small farmer that raises and slaughters their own livestock.
Become intimate with the process.

I feel that understanding your sustenance from cradle to grave is extremely important.
Ethically, ecologically, spiritually, psychologically.