Is it the opportunity to be a cofounder/early employee? Potential fame & fortune? A chance to change the world? Getting paid to build something cool? A specific

Is it the opportunity to be a cofounder/early employee? Potential fame & fortune? A chance to change the world? Getting paid to build something cool? A specific vertical that you’re interested in? The chance to work with great people? What is it about a potential job opportunity that gets your attention? What would you have to see in a job listing to entice you to respond?