Because the job is more interesting than the alternatives? Because there is room for major career growth? Because the work/life balance is better? There are tons of reasons it would be preferable to take a lower-paying job. Salary is by far not the only consideration (and for some, not even the most important one).

You would accept if:

- You're not broke

- You think the work would be more interesting/fulfilling than places that pay more.

Of course, I'm sure there's a tipping point where you don't care how interesting the work is. But in my mind you'd use the above criteria if someone is offering you $95k/yr when you're currently pulling $110k/yr.