Stuff happens on the road. In Amsterdam, my hotel room was robbed while I slept. On the balmy island of Moorea, a roach crawled into my ear and got stuck. I starved for five days in Tuscany.
All that (and more) happened back when I was under 30 and perfectly healthy.
Now the number of things that can go wrong has increased drastically.
Read more at http://travelswithpain.com/2011/08/23/fear-of-traveling-with-pain/