Noel,
Never mind evolution. The simple fact is that certain types of paint work best for specific results. Granted, every modeler has their preferences, but my previous statement still holds true. And consider this: Since enamels and even lacquers are vanishing because "they smell", "they're dangerous", "they cause cancer", "they damage the environment", etc, what happens when they're no longer around and it's discovered that acrylics of all varieties are also dangerous, damaging, etc? What do we use then? Water color?
Will we adapt? Yeah, you're right. We will, but that doesn't necessarily mean we'll like the journey.