I'm 50 and I've been learning a bunch of new stuff over the past couple of years and never shy from looking into something new (unless I'm really not interested in some (tech/language/whatever), which does happen). But yeah, I do know some people who don't seem to be willing to learn much more though many times they really shouldn't have pick this field to begin with.
Basically, if I'm in any "comfort zone" for too long, I get bored. :)
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