Yes. I get what you are trying to say. But earning for a living means diffrent things for people. A lion would try to be a CEO and live a lavish lifestyle off his own dime. A sloth would be happy living off UBI and going to the local grocery store to see what's on sale that day in order to decide what's for dinner that night.

People, like animals as you've greatly pointed out, live the lifestyle they've been given. Some animals (people) go out and live life to the fullest to achieve the most they can (a la a lion going out to get the biggest prey than can catch to feed their pride). Other people (like sloths) are alright eating slightly rotten leaves every once in a while cause they appreciate what the tree has given them (a theoretical situation where people on UBI are happy with the handout life they've been give).

Now you may go into that "theoretical" situation I said and say there will be people that aren't happy on UBI and resort to theft and whatnot. Going back to the animal analogy, hyenas and vultures are a real animal and resort to an unsavory lifestyle according to most. There will always be bad and outliers but you can't base your whole opinion on them