You say your horse has no personality.. and to be honest this is how I feel about a lot of geldings, not all, but many of them just seem a bit nothing. That's why I like mares - they never seem to lack in the personality department!
This is so funny to me because I am just the opposite! Well, not exactly. I do think mares have personality, but the ones I've had have had the annoying, moody, clingy personalities. I like my geldings because they're funny yet independent.
Rusty and I didn't bond right away. He was a complete pain in the butt, and he still is. You don't know how many times I considered selling him. But we FINALLY bonded after a year. I miss riding him right now (he hurt himself), and everytime I ride a lesson horse, I long for those little things about Rusty I never knew I liked: how he just plods around the arena on a loose rein, how he isn't ADD, how he isn't hard mouthed, how he doesn't try to bite when I tighten the girth, how I can slip the bit right into his mouth, and how he doesn't sweat too much ever, and how he loves to have his face scratched after you take his bridle off.
Brushing doesn't mean a thing to this horse. He's the most aloof horse in the world when it comes to brushing. And he doesn't run up to me in the pasture like my other horse, Knight, does.
I took Knight on a trail ride a while back with my friend and her horse, Sunny. I love Knight, but it just wasn't the same without Rusty. Knight's his own character and pranced a lot and tried to buck at the canter (which was quite amusing), but I missed Rusty's independence and how he doesn't mind being left behind, and how he doesn't buck and doesn't get scared, and how he is the one that will lead the others past a scary object or into water. And Rusty and Sunny are both alpha types - they have this "bond" where they might pin their ears, but they never kick each other and like each other - poor Knight kept getting threatened by Sunny because Knight is so low on the totem pole.
Yeah, Rusty has issues. He is trouble for the vet, lacks some manners here and there, is stubborn to load in the trailer, and gets heavy on the bit and gets fast when we jump if he's excited. But he's my baby.
Knight is a perfectly nice horse, but we just don't have the bond. It's not a failure, it's just preference. Sorry for the novel on Rusty, but I just miss riding my buddy so much!