People don’t ask me all that much.
I actually really love sharing horses with people. I kind of wish they would ask me more sometimes. But I do have different responses to the OP’s 3 categories:
Category #1: The clueless “I’ve always wanted to gallop a horse” crowd-- this is a hard no. I’ll often offer, “if you want to come learn to ride, I’m more than happy to let you get on my horse and I’ll give you a basic lesson.” If they take me up on it, great! If they still insist they want to go yahoo about, then we are back to a hard no. They usually give up pretty quickly because I just end the conversation after I tell them my horses would literally kill them if they tried.
Category #2: “Can my kids ride your horses?” Yes yes yes a million times yes! I don’t have school mounts, so it will probably just be a pony ride, but as long as you aren’t looking for a law suit, I will make something happen for your kids. I love introducing kids to horses.
Category #3: “I already know how to ride can I please ride yours?” Eh, this is the group I’m oddly most likely to say no to unless I know the person and their riding ability well. It’s not that I don’t want to share, but this is the category I’ve consistently had the most incidents with because people’s experiences are so variable. And again, I don’t have appropriate school horses to to boost confidence or fitness.
If we want the general public to stop asking us stupid questions about our horses, we have to expose the general public to horses. 