I like this take. While I've primarily lived in Python for much of my career (and I don't see that changing soon), I've tried to find reasons to use other languages in at least a hobby capacity so that I can (1) keep my learning muscles warmed up and (2) because they can often shape how I think about software in general.

Like the Alan Perlis (I think) quote goes: "A language that doesn't affect the way you think about programming is not worth knowing."