Energy bars are my main food source while hiking.  But after eating them for a few days (heck, after eating just one), I'm sick of them.  I'd rather starve to death than eat another one.  The only reason I keep eating them is because I'm convinced they have some sort of chemical/biological/physiological impact on my energy and stamina. 

As I endlessly walk through the wilderness, I tend to think a lot.  Without fail, I always end up focusing on food.  And I wonder, "Why don't I like energy bars?"  I think I found the answer:  They're made of strange mixtures I would never eat on a regular basis.  Honesty, who mixes chocolate, nuts, and oats?  Who eats vanilla, flax, and peanuts?  Toffee chocolate chip?  Cappuccino?  I'm almost always an opponent of foods that contain nuts when they don't need to (except peanut M&M's).  Energy bars are no exception.  And things like toffee and cappuccino just shouldn't be in things that aren't called "toffee" or "cappuccino".  Gross!