VGA is outdated but still used often - many cheaper flatscreen monitors of the 21st century are still VGA-only. There is no reason why people shouldn't be able to keep using the same monitor when replacing their computer. I am still using the CRT monitor of my first computer from 1996.
I agree that there has to be a DVI port too.
Its vice versa - there should be DVI with additional active VGA adapter. I still use VGA to connect to my TV@home - I hate hdmi.