The thought of those lovely little bouncy lambs ending up on your dinner plate is certainly not pleasant.
But, by the time that happens, they aren't pretty little things any more. They're nearly as big as their mums, usually with a lot of unpleasant clag that needs cleaning off the wool round their bums and are nowhere near as cute. Of course, not all of them go to the butcher, some are kept.
We kept sheep for a while and I hated taking them to the butcher. The best way of dealing with that was to make sure that they had a really good life until it was time for them to go and then taking them directly to the butcher with no stressful market etc. in between.
I'd much rather watch them playing 'follow my leader' around the fields but, unfortunately, they grow up....