Here's why:
* D'Artagnan is a fictional character. He's known for his bravery, loyalty, and skill in swordsmanship. But, depending on the story, he might also be portrayed as:
* Naive (especially early in his adventures)
* Impetuous (sometimes leading to trouble)
* Charming (to both men and women)
* Stubborn (when he believes in something)
To answer your question, we need to know what kind of d'Artagnan you're thinking of! Tell me more about the story or version of the character you're interested in.