I definitely notice a huge difference in desire to get up in the morning depending on the importance of what I'm working on. If it's menial or ultimately unimportant work, I can feel burned out working 30-40 hour weeks. If it's world changing stuff that's never been done before and will save thousands or millions of lives, I feel engaged working 60-80 hours a week.
When an employer is trying to recruit me, they don't need to offer more money than everyone else. They need to sell me on the importance of what I will be working on. For example, autonomous vehicles present continuous research and engineering challenges for which you often must provide the first solution anyone has ever devised. This addresses the problem of menial work. Accelerating the overall global development, production, and adoption of autonomous vehicles by a single day could save over a thousand lives. This addresses the problem of importance of work.
At the end of the day, money is secondary. I need enough that I don't need to worry about struggling financially; but, the primary reason I will accept an offer has nothing to do with money. We spend a large portion of our lives working. So, we better enjoy whatever it is that we do.