Of all the people who eat Trail Mix, be it purchased in a bag or made at home, how many of those do you think eat it on a trail?
I rarely purchase the bagged versions, as they are usually too expensive, or contain ingredients that I don't care for.
My favourite trail mix is simple: Peanuts (plain, with salt, or honey roasted), raisins, and M&M's. The M&M's make it less likely I will get sick of eating the stuff after a few weeks.