It still suffers from fear of the unknown. It's not intuitively understood from common experiences in airline travel or driving a car.
Consumers now accept efficient, better-handling small cars.
Business has replaced big mainframe computers with PCs. But when an airplane is smaller, more fuel efficient, and more versatile than a Boeing, out comes public prejudice. The reality It's transportation value for some, career development for others, or just plain fun and relaxation. Nothing else you can do for yourself can cover the miles, offset the expense and inconvenience of commercial transportation, and make every trip a unique and enjoyable experience. For fun or business, general aviation is productive.