What's so bad about that?

Doing business development today. Not my favorite thing. I still cringe when I send emails to people I don't know very well, or emails that make me feel desperate, like I need work. Which I do. That's why I'm doing it. So why does sending an honest email make me cringe? Basically all I'm saying is: "Hey, if you need some awesome music I can make it for you." That's pretty straight forward. What's so bad about that?