Pigs reach slaughter weight at about 6 months[0] and the lifetime of a domestic pig is 15 to 20 years. Their breeding age is 8+ months. So we kill them before they reach the prime of their life most of the time. Killing them at their prime might be less of a moral issue than what we do currently.
That is an interesting comparison to other reasons why we kill animals, however, the point wasn’t a relative moral comparison to animal slaughter for food purposes but that it’s not zero cost morality wise to kill an animal in its prime.
It's not zero cost morality wise to kill anything at any point in their lifetime; from bacteria, to worms, to flies, to pigs each has its own weight on a person's conscience be it nil or hefty. I mean that. But a pig is not human so it's acceptable to me.
Your earlier comment mentioned morality without qualifiers; here you refer to your own morality; this seems more accurate. Note that there are people who refuse to eat or otherwise harm animals and they cite moral reasons too.
I understand your view and agree with what you’ve said, however, the primary point was that there are moral implications if you intervene in another life so it is not a moral freebie.
[0]https://modernfarmer.com/2016/05/raising-pigs/#:~:text=Most%....