Surely this is how a healthy human is supposed to live.

The amount of people addicted to caffeine who don't even know it is crazy high.

The costs of withdrawing for some are higher than others, so for these people quitting isn't just a day or two of headaches, and possibly their life doesn't afford them the luxury of going through the pain and low productivity

Many factors play into it rather than just low self control, in case you're wondering why you got down voted.