Oh man, it must be like losing a child lol. At least it is going to a good home and will help the budding marksman. On the plus side, you've made a hole in your stable so why not fill it with a new addition, as you say...you may already have your eye on something!
I deeply regret selling off my spinning and weaving equipment, though at the time it was necessary to remain solvent. It has been a long slog replacing those things, but I am making good progress.
In the end, things are just that...things. That being said, some things are much harder to part with than others. I feel your regret lol