I am currently level 57 and have still not taken sides with either the empire or the stormcloaks because I haven't found one of them that I really like. Is there some way to either make peace, or destroy both of them? I know that I can complete the main quest line with out taking sides, I just want to know whether there is any way that I can complete the war part of the game without taking sides
Well, actually... you can! I have that problem too, I don't hate anybody in skyrim, and I honestly don't want to spill that many blood. And luckily, there is a quest for that. it's called "Season Unending". To activate this quest you must either talk to Esbern (Akaviri), Arngeir (Greybeards), or Paarthurnax about the war, and so on. Here's the link for further information http://elderscrolls.wikia.com/wiki/Season_Unending
You will have to pick a side to carry on with the "Civil War" storyline... However, I do have a profile where i haven't picked sides but did the "dragonborn" storyline. I got to a part where I call Tullius and Alfric (forgot the spelling) and they call a truce. I haven't really played it past that though, so I don't know.
NB: I chose the imperial side because, to me, it has a happier ending.