Two Problems
with card counting or so I am told by certian knowledgable individuals. One is simply that if you are not successful at it, you are losing money that you could be doing good with, like feeding your family or someone elses. Two is the fact that if you are successful, you may not depend on the right person for your blessings and not give thanks for same. Further, if you play in a real casino, you are surrounded by a lot of neg posibilities, and even if you play online only, it does take time away from your family, yourself, and the better things in life you could be doing with your time.
I consider it as a second job where I can decide what hours to play, all based on the size of the advantage available. I have also set up time on certain days of the week were I go visit my Mom n Dad as they are in their golden years. I see them once every two weeks now. Our time is short, so we must make the best of it. EVERYTHING is advantage play, or not.