Another reason is we may be inspired by teachers who never stop learning.
Then you find that some jobs, like instructors and professors, that require continuing education units.
The act of learning for work and for pleasure should never be forgotten. Not only does the practitioner gain new knowledge, learning new things builds confidence.
And here's a funny thing - a connection to one new idea builds questions that bridge to other new ideas.
With that in mind, here is a quote attributed to St. Jerome:
It has been difficult for researchers to verify the quote but it has been used many times and the sentiment rings true.