I still use Apache for some internal stuff I host. It works, has been running for over a decade, and no one has ever complained about the speed. I have no reason to invest time in changing it over.

Technology should solve business problems. If the move from Apache to nginx isn’t going to solve an actual problem, it becomes technology for technology’s sake.

In some cases, squeezing out a little extra performance does matter, but for most sites, I don’t think it’s that big of a deal.