Intel's upcoming Skylake architecture is rumored to not support VGA. That might speed along its demise somewhat.
I actually use the VGA port on my ThinkPad somewhat regularly—it's still the most common display connector in many offices. However, I do carry dongles for HDMI and DVI (adapting from the built-in DisplayPort) just in case. I'm looking forward to having USB-C replace all of them.
I have no doubts they will continue to have VGA ports until 2025...