Just wait until you become old and frail (not that I am) and then you will find out the benefits of the NPPL.
No medical as such just your doctor's sig on the medical declaration at whatever charge he cares to make (a bottle of scotch in my case) and the ability to continue to fly even when you have health problems which would keep you grounded with any other licence.
For example, at the beginning of this year I had an angina scare and had all the tests (angiogram etc) done over a 4 week period which resulted in my getting the all clear. During that period, I could still legally fly (without passengers) and after being given the all clear I was back to flying as normal and no restrictions.
Even if I'd been diagnosed with angina, I'd still be flying with the passenger restriction but at least I'd be flying!
That's what I like about the NPPL.