I was raised veg, so it's pretty easy for me. But I've tried various bits of meat through the years. I'm not religious about it, and am not made uncomfortable by it.
Over the last few years though I've become much more interested in the local vs. industrial food chain discussion than the veg vs non veg discussion. I much prefer local (organic if possible) food to non-local and/or industrial/factory food.
For me it seems more ethically viable to eat a local natural diet that includes some meat, than to eat a non-local factory farm produced veg diet that wipes out entire ecosystems. But I'm not religious about this either.