[TheRealPomax]

why would you believe companies would pay multiple people lower salaries, totalling more than a single six figure salary when benefits and taxes are factored in? It's easy to ignore large corporations and both government and private institutions, but they are not interested in efficient quick fire best solutions, they mostly care about things simply not breaking, and veeeery slowly moving towards what 5 years ago was the future, just incase the actualy 5 years from now prognosis doesn't pan out.

Learn all you like, it's a great idea and makes you a versatile developer ("for some, X is great"), but don't ignore a very real part of the world where versatility is literally a non-issue, and being able to maintain an aging codebase without suggesting changes is what gets you set for life. Claiming that "everyone should X" ignores the real world.

[mannykannot]

The history of employment is littered with the misfortunes of those who expected that one narrow and not particularly deep skill would set them for life, and the trend is accelerating.

Beyond that, there is the issue of whether you would prefer to work on something interesting, all else being equal. Of course, for that to be an issue, one first must be interested in something.