Look, we have this sort of thing in Israel, the result is that unemployed people can have more children cause each child is another paycheck. Many (the majority) of those children are similar to their parents and are not as excited or competitive about maintaining a job. This is how our society nurtures them to be and it is in the nature of their parents.
People like myself who are working hard, are paying for these children and exhausting their savings and recreational money, staying at home after work and mostly sleeping cause tomorrow is another day and we have to work hard to support the freeloaders. We are basically forced to work for free to help strangers by paying taxes. I know this may sound strange to you but knowing that a large portion of my income will be drained by taxes does not entice me to work harder which means there is less for everyone.
People who are poor don't deserve to be poor, just like people who are short don't deserve to be be short and people who are painfully ugly don't deserve that either. People like myself who are bad at sports, deserve to be bad at sports? no. People who are bad at satisfying the needs of others, get less value back from these strangers who owe them little. Sure they don't "deserve" to be born less gifted in the practicality domain but it happened. You are not breaking people's legs because they are highly gifted at sports or pouring acid on their face cause they are pretty, so why would you want to forcibly take money from people who are gifted at working and doing what people need and want?
It wouldn't be bad if poor unemployed people wouldn't procreate but they do at a higher rate than hard working "rich" ones which means their lives are not as terrible as you claim. In fact, the level of life afforded by a poor person today is far better than that of the same person 100 years ago.
To be honest, I am all for what you say, a basic income for artist and people who follow a more non-conformistic life. Just as long as they don't have children and not because I want to decide for them, it is just unfair to ask me to support other kids when because of my job, I hardly have time to see my own child.