Is there a way to end the war other than joining the Stormcloaks or Imperials?

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

No.

There is no way you can complete the war part of the game without taking a side. There is no such option in-game. The war part between the factions must be completed taking one of the sides and doing the missions.

No, at least not in an unmodded game.

The civil war plotlines have no "third option". You either side with the Stormcloaks and save Skyrim, side with the Imperials to control it for the elves, or stay out of it altogether.

If you're playing on PC, there are likely to be mods that allow this.

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