Try doing a "pointless" cache with my two year old and see what kind of a "challenge" it is. What is not a challenge to you may be to someone else who is not as mobile as someone else. I like all types of caches as there are all types of people and some won't like this type, and some won't like that type...etc. So to have a few choices is nice. I can't always do the Bataan Death March through the woods to a Groleau cache because I have my daughter, so I appreciate something simple when she is with me. Other times when I am alone I can do the harder ones up a mountain or down some fathomless pit. Variety IS the spice of life.