depends on if they're hurting themselves.  b/c if they're hurting themselves, they prolly are hurting friends and family around them.  like an eating disorder or an alcoholic... 

well, in reality if you have to ask this question then it means they are hurting someone else.  they are hurting you because it bothers you to see what they are doing with their life. and most likely, you are not the only one that feels this way...

haha if it was bad everytime someone bothered another person... We'd probably all kill eachother. I meant it more as a rhetorical question.