I asked the same question, so that I could apply..
I think the technical freedom plays a big part, not because you're chasing the shiniest, but because you're choosing the tools that will hopefully outlast you. One of my former employers was 'modernizing' their IBM i (former AS/400) systems by porting them to Java and Windows Servers, and they were having all kinds of problems. Couldn't even get the EBCDIC to Unicode conversion quite right. I was lucky not to be there anymore.
But I'm sorta old and some of my school's texts were outdated so they had programming examples and explanatory text that treated EBCDIC on equal footing with ASCII.
So unlike anybody who dealt with EBCDIC conversions in the wild, seeing that acronym actually takes me back to happier days!