It is “forever” for them if you give them a peaceful and dignified end to their lives. They don’t have plans for the future. They don’t think about time the way we do. They live in the moment.
I had three horses for quite a long time on my own farm. I used to worry about what would happen to my two guys as they became older and older (one I’d had since birth and he was sort of special needs due to an injury when he was a 2yo). Christmas Eve 2017, my 28-year old buddy was put down due to what basically boils down to colic (pacing, not eating, tucked up and in great pain). I was heartbroken, but at the same time a bit relieved. We had a brutal bit of weather right after he was laid to rest that would have been so tough on him, I was grateful he didn’t have to deal with it.
Labor Day 2019, my heart horse, the one I’d seen born, was standing in the front pasture that morning with a very obviously broken hind leg (broken in several places). He was 22 when it happened. Saying goodbye to him was one of the most devastating moments of my life. No time to prepare due to the nature of his accident.
I miss those two a lot. They were family members, no doubt about it. But every time I read or watch something about abused, neglected, abandoned horses or horses being auctioned to kill buyers, etc. I am SO grateful that I never have to worry about that ever happening to my dearly departed guys. They’re safe from anything like that.
I have one horse left. I sold the farm and now board at a great place. He’s enjoying his new role as “the only horse” and soaking up all of the attention he gets. I love him to pieces and will keep him “forever”…however long that is. He will not leave my care. He’s only 13 right now and I am 47, so right now I feel confident that I can care for him into his old age. He has his own set of issues that make him a “special snowflake” LOL, and if anything were to happen that would prevent me from being able to care for him, he’d join his BFFs over the rainbow bridge before I’d let him go to an uncertain future. I’ve had him since he was a yearling and basically rescued him from a not-so-great situation myself. I won’t let him experience that again.
You’re doing the best thing, IMO by considering giving your guys a gentle exit from this world. They are lucky horses.
Hugs to you though. I know it’s not an easy decision.