I am looking to write a part of my book were an intelligent dragon kidnaps the hero. So the question is: why would a benevolent and intelligent dragon kidnap someone?
A few different options here:
- Ransom. As ActionEconomy (whose answer is also good) alluded to, dragons tend to hoard things of value, and the dragon as an intelligent creature could easily recognize that she could get a good addition to her hoard by kidnapping him and demanding the regent pay to get him back.
- Leverage. Perhaps the regent has been enroaching upon the dragon's territory or something she considers hers, and she has kidnapped the prince in order to get them to back off. (There could be an additional explanation as to why she doesn't just go in and use her dragonly might to chase them off, such as potential damage to a resource she wants, restraint on her part, etc.)
- The prince ran afoul of her in some way, potentially without realizing it. Perhaps he commanded an expedition into her lair which took something of hers, and she considers him to owe her a debt which can be served in this way.
- Bragging rights. Perhaps it's common for dragons to show off to other dragons by seizing things or people of value from military kingdoms, and she's just trying to impress her neighbors.
Hey the specifics of how that mythological beast reproduces has largely been shrouded in ambiguity. Why not need a human man to make dragon babies.
One variant among many of dragons is that they are cursed humans anyways.
It wouldn't be far fetched for a cursed woman to vent thousands of years of pent up sexual frustration on some knight and shining armor.
In most high fantasy, dragons hoard "things of value", not just gold, but silver, rubies, jewelry, armor of dead adventurers etc. Perhaps the dragon recognises he is valuable in general and just wants to add him to the hoard of valuables.