I hadn't owned a bike since I was a kid until a month ago when I bough a Trek 7.2 to pull around my 1 year old and get some exercise. I have been out and about almost every day since, really enjoying the hobby/sport.
The roads and paths are flat as a pancake where I live, I have found no need to use the big or little rings. In fact, I rarely get to the high or low gear in the back either, probabally 99% of my riding is done in 5 gears. will this be beneficial in extending the life of the drive train?