I took the occasional lessons at camp and in college, had friends with horses, but never really wanted one. I always figured they were too much work. I've always had lots of large dogs, cats, etc., but never pushed for a horse despite loving them and being around them.
Then a couple of years ago, my dear husband (who'd never ridden a horse at all) went on a trail ride with some neighbor guys. From that day on all I heard was, "I want a horse." Knowing how little he helps me with the housework and other animals, I said, "No." Kinda funny since I'm usually the one hauling in the strays. He kept at it for over a year. Then he and the boys took me on some trail rides and then took me out just to "look at" some horses that were for sale. Little twerps talked me right into it (LOL) and we bought my horse that day! Bought the hubby's horse 2 weeks later. I LOVE having the horses and hubby is way more helpful than I'd expected - he did all of the wiring in the barn, put up the fence, etc.
So no need to convince daddy here - I was the one that had to be convinced! Of course now I want a mini, a draft or two, maybe a kid pony (and kids for that matter). Now I just have to convince hubby that two horses just won't be enough for us. LOL. Oh, and I'm trying for chickens too - but I think I'm going to win that one if I let him get a beef cow
See turning 18 doesn't eliminate the need to convince the men in your life - it just changes the arguments a bit. Good luck and have fun!