Hmm. Laserlight has a good point about subject matter. I could agree, perhaps, on that. Learning never stops.
However, if we're talking about the profession/hobby that's most often represented here, I can't say "never". I can almost say never. I'm sure that never is true in my case, but...
There are a few phenomenally interesting gentlegeeks who come 'round here occasionally and discuss subjects like exponential calculus while reminiscing about the first FORTRAN compilers coming out when they got their first jobs, or some such; they know history, programming, and have a wide range of experience.
It's even evident in their code (at times) that they have logged lots of seat time in many different environments. And, to tell truth, some of them probably aren't so old.
I'm not one of these guys .... I enjoy their company greatly in the forums, learn from them, envy them their talent, and talk to them as if they were my friends. It'd be nice to think that if we ever met, we could be, a little. (However it's not too likely to happen with most of them.)
But there's a critical difference, and way in which they are not like me at all. I'm noobie, and they're not; even though they'd be the first to give something akin to an "aw shucks" (in geek terms, of course) in response to a statement like that.
Now, lest you think I'm only talking about one fellow or two with very high post counts, that's not necessarily true. There are others whose postings share these qualities, but post much less often. Probably they have learned that they have only so much time, and have discplined themselves to not spend too much time here. Or, perhaps they spread their unique knowledge and point of view on some other forum more often --- I am sure that group of folks is fortunate to hear from them.
So, the best answer might be "not never, but it usually takes a loooooong time..."
Don't kid me. You see it once in a great while, admist all the frittering that goes on around here. You can tell the voices of experience. Or at least, I can.
Sincerely,
dalecosp
Pre-Epoch Newbie...