I'm veggie and being honest, I really don't care about animals. I actually think if it's a straight decision between animal welfare/rights vs cost and people are more interested in the cost thing, eating pets makes a lot of sense -- they're already there and available so cost-wise that would work, no more expensive vet bills etc.
I'm actually being completely serious btw -- I've genuinely never understood why eating one animal is seen as fine and eating another isn't. (Pigs fine, cats not fine, cows fine, dogs not fine, whatever.)