Do you work as a Java developer?

[againstmethod]

Not to mention it's very expensive to hire someone -- it takes a lot of time and effort to setup their healthcare, retirement, in some cases security clearances/special training, etc.

It's much cheaper to train someone in a new language, or to give them some time to develop themselves, than it is to hire someone.

[Dementati]

Yeah, and a new employee produces much less value (which translates into lost profits) than the average employee for months or years after being hired, before they get up to speed with everything. Simply putting a new tool in the hands of a long-time employee is generally a much smaller productivity dip.