I really hate being called "ma'am". Everyone I know does. And it's not cause it makes me feel old. I'm not old. I'm 21. And people tell me all the time I look like I'm 12. So why the hell are you calling me ma'am?!?
The word really comes with a lot of negative connotation and I don't know why that is. But it's true. I don't personally know a single woman who gets offended when they head the word "ma'am".