I'm a product designer and accessibility advocate, a couple of years ago I couldn't move my fingers and had to go through many surgeries to be able to do that nowadays, I have a total of 7 prothesis, now, when I design websites and apps I always push for more accessibility features in the company I work for, I guess that's my main goal, create products that can be used by everyone, when I do that I get the feeling that I'm useful somehow? OFC The money is a good motivator too, but if you work only for it you will eventually get bored and hate your job, so finding a purpose is important.