I'm an X farmer in the EU, unlike the farmers in the U.K. who will have to figure out their own laws about animal welfare post brexit, animals in the EU are protected from cruelty by law.
Pinkponies, I agree with you, yes you see the lambs being born and they feed on organic grassland swards, they're allowed to roam in kin groups and also housed in bad weather, dipped and shorn. Of course you get attached to them, they're lovely.
They have one bad day. I love lamb as meat, it's organic and has no pesticides hormones nor growth factors or antibiotics. It's delicious and nutritious.
My feeling on vegans is that it's up to them what they want to eat. Personally I think their doggedness, poor mood and lack of humour is a vitamin B deficiency. I also wonder why they have meat eating teeth and enzymes in their guts, but I don't really engage with them as their breath smells of granola 
Seriously, I used to be a vegetarian and didn't eat dairy or eggs, but ate fish. I wasn't very well on it. My belief is that as a species we have evolved to eat meat and vegetables, and grains.
What we are not evolved to eat is sugar. And it's sugar that's killing people. If you have to polemicise on your soap box, sugar content of foods, including sugar water injected poultry breasts is the thing to bang on about.
I feel sorry for the people in the uk who may have to take American beef and poultry as part of some trade deal now you're not in the EU.
Now, the American and Brazilian laws are extraordinarily lax and treatment on feedlots is hellish and inhumane. I certainly wouldn't eat any meat made in those canibalistic factories of misery and disease.
I've worked in abattoirs as well, and can hand on heart say that the humane way of killing animals is 100% better than halal, or slitting throats to bleed out without a humane gun first, but of course one can't say that as that might upset people.
Even mentioning I've worked in an abattoir seems to make vegan people think I'm a murderer. The thing is that I've never met a vegan who has worked in one as well, and has seen with their own eyes what they so vehemently argue against.
It's one bad day in the life of a well treated, well fed, healthy animal.
My onjective as a farmer was to produce food that was cruelty free, and is pure and healthy. Organic grass fed animals with one bad day is a pretty good approximation of that.
The situation is different in America where the humane treatment laws the EU has aren't in place and may well be the reason why so many vegans are American and so very strident about their views as they assume the laws and production of meat is the same everywhere, and it isn't. It's a symptom of the insularity of Americans who think the world is the same as it is in the USA.
Post brexit, I don't know how the uk will legislate for their own meat production, already the hedgerow acts which protect breeding birds are going to be slashed.
I've no idea how your farm to fork transparency will be policed and monitored when there is such a push to rid the UK of restrictive EU humane treatment laws. Your biodiversity will certainly go by the wayside if the politicians get their way it seems.
And the trade deals the uk makes with the USA may well see the uk flooded with pumped up toxic bse ridden meat from the USA as part of the deal. I feel sorry for you there in the uk.
I reckon organic locally grown food including organic grass fed meat is essential for a balanced diet and health. Maybe with the crap meat you'll get from the USA you'll all turn vegan by and by in the uk?
I know I won't as I live in the EU and the laws here protect animals from cruelty and inhumane butchery. Meat is delicious, toxin free and the supply chain is transparent where I live.
I eat animals about two times a week, guilt free, knowing that that animal had one bad day in a healthy and happy life under the sky, with nutritious organic vegetarian food.