Would you like to spend say 20k (which is less than a regular notebook price) for a Notebook with a configuration of say, Pentium III 700 MHz? Or would you rather spend some 10k more to get a Notebook with the latest configuration?
I think many of us would prefer the second option. Because the former is not ‘sellable’ any more!! I am trying to use this analogy, with ourselves as the outdated Notebooks and our (prospective) employers as the buyers.
Longer you dwell with a particular technology or a product, more the expertise you gain. But does that expertise makes you sellable, say in another 2/5/10 years of time frame? Or is there anything else that needs to be done?
So keep asking the question to yourself periodically (say every 1 or 2 years): Does my current skill set, expertise and experience make me a ‘sellable’ commodity in the market? What can I do to myself, for the prospective buyers or the current owners to be interested in me?