If I have a high income, I have many options to swap that for fulfillment and satisfaction. I can buy stuff, I can go on interesting vacations, I can have expensive hobbies, I can donate to charities, and I can partake in a large number of experiences that are only available to those who can afford it. And finally, I can give it all up and pursue a life of simpler pleasures. Those are all options I have.
If I have a low income, I might still feel satisfied and fulfilled, but that could change. What options do I then have?