I have a kid, so I don't have any time to study outside of work or put in tons of extra hours. After years of being screwed over and passed over, I don't really have the drive/hope to get to that level since it wasn't rewarded the first time. Also, the work is very boring now and isn't transferrable to other groups or companies, so I don't have any interest in being an expert just to throw away that knowledge (like I was forced to do in the past).