"If it ain’t broke………"
What is sad is the way that people forget just why this type of aircraft might be needed - we have a war and we need something that can support ground forces with lots of cheap ordnance - and we need A LOT of them.
We build a Stuka, Typhoon, SkyRaider or an A-10... then time drifts on and we drift back to faster, more complex, much more expensive and LESS airframes. We forget that however advanced the aircraft it can't be in two places at once.