We have no intentions of breeding horses. We just want a ridable horse. A stallion usually can't be ridden in a group, or be manageable in a show full of mares. Basically, they are destined to live a lonely life. If they are gelded, they can be with other horses just fine. In my opinion, a stallion (who is not breeding quality) will have a better life if he is gelded.
Sure, down the road, either of us may be able to handle a stallion just fine. But since neither of us plan on breeding, being able to handle a stallion doesn't mean its a good idea to own one, correct? A stallion may be trained to be respectful of his human, but that doesn't mean he will be the safest mount, right?
He doesn't like the idea of gelding a stallion because you can't handle it. If you can't handle it, sell it to someone who can. That makes perfect sense to me, but there is also the issue of the stallion being a monster, hurting its rider or himself during everyday handling. Can someone please help me explain this (also so I can explain this better to people in the future).