...you can't fool Mother Nature and have to have a realistic attitude about it. One reason why I'm in these forums and riding a bicycle at all this year is that I "retired" from motorcycling after 35+ years. I had been getting less out of it the last few years, especially with the more crowded roads, SUVs, drivers on cell phones, etc. I didn't used to worry much about the dangers, but I could also feel that I was not as sharp as in my younger days: slower reflexes, slower perception, and so on. I rode sporty road bikes (BMWs), usually pretty fast, and could see that I was less able to handle something happening at high speed. And riding "cruiser style" on a Harley or Gold Wing was never my style.
So I sold my m/c, bought a new bicycle, and have continued this year on two wheels. I ride mostly local roads and rail-trails, but that's plenty for now. We've got quite a bike-trail network being developed around here (Rochester, MI), so there will be plenty of places to go in the future. I've also found bicycling to be an excellent cross-training activity to supplement my running. This weekend I rode the day after doing a half-marathon and found that riding the bike helped take the soreness out of my legs.
I look forward to lots of good postings in this forum. Oh, and I'm 58 by the way.