Smithy
What a fascinating and really inspiring life you have led. Do you believe that age is a barrier to anyone looking for travelling adventures? (as opposed to just holidaying)
No, I think that provided you're careful and don't try and run up and down Everest, or try and swim the Channel every afternoon, travelling is good for you at any age. I think particularly as you get older and have time to yourself that this is when a well-planned journey can really lift your spirits.
I'm 70 now, and I don't think I shall ever stop travelling. It keeps me up to the mark both mentally and physically and the interaction with the rest of the world and the people I meet makes me feel that there is much more that unites us all, than divides us. This is a useful antidote to media stories which might give you the impression that the world is falling apart.
So, go for it at any age - and if possible, try and be a little adventurous. Choose a tour which gives you some time to yourself, or best of all if you have any friends abroad, let them take you around their country. Nothing better than personal experience!