Why do my friends keep coming out to me?

If you have your own issues then I suggest it would be appropriate if you dealt with them and not worry about your friends' secrets. Hell yeah, be happy that people trust you. But if you are saying that you feel you don't have time to work out your friends' problems for them, then look at it this way: your friends aren't confiding in you to help them deal with their 'problems', they just want to tell somebody who they can trust. Imagine it as if they told you what they had for breakfast yesterday morning, in which it'd be something you wouldn't think twice about, and would not tell anyone else. This way you can feel fine with what they tell you and rid yourself of these umptions like ''they want me to help them with their insecurities'', and just be a good friend =]