I too find walking absolutely exhausting. I have Motor Neuropathy and my legs feel like heavy planks when I walk and I also feel as if I am on stilts! I force myself to walk as I know my leg muscles are becoming weak, and our old farmhouse has many stairs to climb, so hard, but all good exercise. I am 84 shortly, and so accept that I am not going to be as spry as I used to be no matter what. I use a very good walker with a seat when out and about, so that if I desperately need to sit down I can - I have plonked myself down in some very odd places it has to be said!!! I have an electric scooter on which I sail out to 'walk' our lovely dog, Mabel, who is a constant joy and companion. I can relate to your struggles totally, but without wishing to sound like Pollyana, I feel very lucky to still be here, and as we are losing a young, and much loved family member to cancer, I realise that whilst neuuropathy is horrd, there are far, far more hideous illnesses to suffer from.