There are a million reasons to why your work might seem worth doing, why it might bear meaning to you. To solve a crisis, to solve a problem, to get you to the next level of management, to get you a better salary and so on.
All of those reasons are absolutely and undoubtably reasonable. They’re also very individual and volatile. The same type of work might bear different meaning to different people at different points in time.
That might not be enough for some. Doing something because of something else might not quite do it at times, for some people.
They need to do the work that’s worth doing.
Not because they want a raise. Not because it solves an immediate problem. Not because their parents told them it’d be safe.
Just because it’s worth doing.