To be honest, in some aspects I do, but most I don't. In order to be a responsible breeder I feel that one should research the breed the intend to breed, learn all that they possibly can about conformation, temperaments, what lines cross well with what, and what faults can be overlooked and what cannot be overlooked. Like I said, my operation will not be started for at least another ten years, when hopefully the market is back to normal, and also when I have purchased/trained the highest quality stallion or mare that I possibly can afford. And if I cannot afford to have the highest available quality out there, I will not be breeding. For as many mediocre horses there are out there, the only horse I will bring into this world will be one of the highest quality. I am sure you love your mare, I love my mare with all my heart. She's beautiful, talented in her discipline, and has taken me very far. We have been the Grand Champion for 3 years in a row on our local circuit. She has an awesome personality, and to top it off she's a sorrel paint with a blue eye. However, she is not a breeding quality animal. She is cow hocked and downhill, among other things. I can also guarantee you that the foal will turn out to be very different than your mare.
Also, not all Arabians are spooky and high strung. I have worked with many of them, and found that they can be very gentle. My first trail horse was a purebred Arabian gelding. He was as quiet as they come, as were most of the Arabians I have encountered. I may be young, but I am not an idiot and I don't fall into the sterotypes, such as Arabians and Tb's are hot headed, Appaloosas are stupid, paints are this, quarter horses are that. Every horse is an individual and should be treated as such.
Like I said, I am sure you love your mare, but I do not beleive that is a good enough reason for any animal to be bred. Not dogs, cats, horses, pigs, sheep, etc.