[quote=MrsB;257213]Funnily enough, I always said I would NEVER buy a TB.quote]
Haha, same! Yet I went out and bought a 6 y/o OTTB as a 2nd horse. My first was a bombproof QH x Appy mare, it was kinda like stepping up from an old bomb to a sports car, lol.
Now I will be the VERY FIRST to admit that my mare exhibits most all the "typical thoroughbred traits" (i.e. Hot headedness, spookyness, and general overreactivness to EVERYTHING) and she is often characterized as "grouchy" but I can tell you first hand that these traits are LEARNED and not BRED (in her case that is) I went back to her breeders and found out more about her history. She was a sweet and inquisitive foal who was sold as a weanling and her temperment just was not suited to track life. She depends on routines and is very much a one person horse. Not to mention the fact that she had numerous abusive trainers and grooms.
I agree about TBs learning a lot of their "typical" behaviour from people. Or perhaps it would be better to say that their behaviour is a product of their lifestyle, and I would even go so far to say that this is true of most horses.
I think that, while a horse's breed plays a big part in the sort of horse it is (its temperament and such) good training is so much more important. Now you can't change a horse's temperament, a nervy high-strung horse, will always be a nervy high-strung horse by nature, if left alone. BUT with good training you can change a horse's attitude, and by this I mean things like teaching it respect and letting it know that it can trust and rely on you to keep it safe, etc.
So what I'm saying is that, while TBs and Arabs may be more hot that other breeds, and while Appy's may have bad attitudes (I'm not saying this is the case! I have an Appy x and she is an angel, I'm merely going by the generalization) with good training they can all be fantastic horses.