Slightly off topic - I'm vegetarian for the sole reason that I don't like meat. Same reason I don't eat sprouts or drink cider - we're not all militant!
That said (I've not watched the video, but I get the feeling I've seen similar) it's fairly well documented that if animals are bred for slaughter you get better flavoured meat - the less stress in the animal's life the better the results.
And as for the Quorn remark by Wildmonkey (not trolling here, just putting another point of view across) - I'm a veggie, my girlfriend isn't. I have no qualms cooking meat etc for her, but it's more for convenience' sake. Plus the Quorn mince is bloody handy when you can't be chuffed to soak a load of lentils or summink for a cottage pie type thing.
I must be the wierdest vegetarian yet though - the only two things I miss since going veggie are liver and kidneys. Note the lack of mention of bacon...