In Love with an older man

Hello everyone I haven't posted in a while because I've been very busy with school, and it gets harder as each day goes by. But anyway I am a nineteen year old girl and I am in love with a guy who is like thirty years old. The problem is my parents say that he is way too old for me. I think that his age is just perfect and so is he. I always hear that girls mature more rapidly than guys to so isn't only right for me to be with someone older than me? I mean there's only an eleven year age difference thats not such a big deal, I know this sounds a little far-fetched but if him and I were to get married; if I live to be 1oo years old and he lives to be 111 would age really make a difference. Maybe I just don't get it or as if my parents say I'm just to young to understand, My parents say that people with such an age gap can't possibly have anything in common and that when a man is this much older than a woman he just wants control but I can't seem to understand this. I try to remind them that everyone isn't this way certainly not the man that I'm in love with he cares about me very deeply and we have much in common. The fact that he makes me happy doesn't appeal to them they won't allow the relationship because they continue to try and persuade me that it really won't last. Maybe I really am too young to understand.