I can remember taking our first lambs to slaughter many years ago now, and that horrible feeling in the pit of my stomach. It never becomes easy but you do eventually see it as part of the process. I think the feeling of pride at a job well done is fully justified. Now when you eat the meat from your lambs you will be affording them the respect they deserve as individuals, making use of every scrap of meat from them, and appreciating their lives. So much better than paying to buy anonymous slabs of meat with no thought to the animal they came from - which probably had a miserable life. I still struggle with sending off some of my older ewes who have been with us for years, but the alternative is for them to go to the knacker and be unceremoniously dumped in a furnace, their meat wasted. So now I can even accept taking those old friends to the abattoir, and enjoying the sausages and burgers I make from their meat.
So well done, and long may you continue rearing top quality animals for meat.