I'm kind of with Devonlady on this, but maybe I don't so much feel sick and guiltily as thoughtful. But I also feel proud we have some a good job keeping them in a very pleasant (for the pig) way. Also, there is a lot to focus on getting right, especially first time through, booking the abbatior, getting the pigs ready to load without stress, paperwork etc. If you haven't done it before worth a dress rehearsal, go to the abbatior a week or two ahead so you know where to go in, are confident you can reverse in if that is an issue etc. And prepare your cut list. The owner at our small abbatior took me into the butchers to go through the cut list about five minutes after we had unloaded the pigs. He was quite deliberate about it, he knew they were our first ones and while I took a deep breath at the time he was spot on it really helped switch from livestock head on to cook head.
At this stage you have little real option it is not practical to keep boars as pets and the only alternatives involve off loading on to someone else. I hope you cope ok, we have persevered and found it very rewarding.