They're not worth it because they take your advice, go use it, screw it up, then blame you for all their problems that ultimately will never be fixed.
They also cling to you and become dependant and want to follow you everywhere in real life. What's that movie with billy crystal?
Your girlfriend is mad at you, you get fired from every job for being a douche, you're a lost soul and not sure what to do with your life, people act a certain way around you and you don't know why, you're not sure what career you should take...
Regular people problems. Those are what I fix. Anything more than that requires chemicals and support groups, neither of which counsellors or life coaches provide. It is difficult when clients come to me looking for help in general, and don't even know what the issue is. You listen for hours in the hopes that it will eventually surface, but it never does, and then they get angry because they are spending money by the hour and neither of you has figured out what their problem is.
Even those who simply want someone to listen to them... I feel guilty doing that, because you are paying me to be your friend, which puts me in an awkward position as well.
(speaking of which I'm overdue to set up a referral with a psychiatrist and some support groups).