Most humans do not want to just exist in a safe house with electricity and good food to eat. Once they start eating good food, their minds are going to start working better; and with less stress, they’ll have the energy to go out and do something with their life and liberty.
For example, they’ll want to watch TV, but the HumanECard does not allow them to buy a television. It only allows them to buy the basic necessities of life.
So, they’ll be forced, by sheer necessity and personal motivation, to get a job so they can buy a television; so they can buy a car that will allow them to travel; or so they can get a bigger and better house than what they’re provided for by the HumanECard.
A person who is provided with the basic necessities of life is going to spend a lot more money in the economy, and work harder for those things that they want, than one who lives hopelessly in despair and poverty.