Do you not see a benefit in coding for the mental exercise and challenge?
Most hobbies are impractical... Machines can produce clothes much faster than a knitter, no chess player will beat the best computers, a boat can bring more fish to port in one trip than you can in a year, etc.
Most hobbies are impractical... Machines can produce clothes much faster than a knitter, no chess player will beat the best computers, a boat can bring more fish to port in one trip than you can in a year, etc.