Why do people think stallions are so unpredictable

I have worked with stallions for a number of years and I absolutely love them. I currently transported a colt (11mo) to a nearby stable, but have been hearing from a lot of people about how dangerous it is to have a stallion. I don't plan on breeding him, I plan on teaching him to dance (piaffe, etc.). He is Azteca. Anyways, any of you out there dealt with stallions without rediculously thinking they are crazy and dangerous? Any good experiences? The stallions I have worked with were so well trained that they could be placed next to a mare in heat and still not react. They all made excellent riding horses.

In truth, it takes a special person to handle a stallion - simply because there are so many people who don't have the ability or experience to properly handle a horse at all- much less a stallion (and 1200 pounds of libido need proper training and handling to be safe - for both horse and human.)

Also, certain breeds can be more challenging than others - the warmbloods for example, tend to be - well, more level headed. The hotter southern horses are more of a handfull.

but mostly stallions are frowned upon because so many people just don't know how to handle them properly.

I've known many stallions with fine even temperments. My favorite story was when I was a teenager my parents gave me a beautiful Appaloosa/Arab mare. She was perfect. Beautiful and sweet natured. I pastured her near my home. One day the stable manager put an antique stallion in the field with her because he figured she wouldn't beat him up during feedng. Oh my he was old. His bones creaked and groaned as he shuffled by. He had almost no teeth. He was OLD! I complained to the manager about a stallion in with my mare. He told me not to worry - he was too old to cut the mustard anyway.