Here are a few advantages:
Good for people with a disability that stops them from going outside laden down with washing
No need to run outside when black clouds are looming
Put your washing out before you go to work without the worry of the great British weather
Silent clothes drying when compared to a noisy tumble dryer
Free up your floor space
Leave your radiators to heat the room, not your washing
Dry your clothes faster than a conventional clothes horse
No need to buy or maintain an expensive tumble dryer
Save up to £60 per year on electricity bills