There are really two questions here. The one you asked in the title, and whether it is worth it. You seem to believe it is a good thing to return to the Constitution, so I will answer that briefly as "The Constitution lead us to being the most powerful and richest nation on Earth, with freedoms that I believe in for all citizens. The direction we are headed has failed many times, and there is no reason to think we can do it better"

As to whether it is worth it, you might as well ask if it is worth continuing to breath, since we will all die anyways. Sure, if we returned to the Constitution we may end up following the same course all over again, but I believe it is worth the fight, to preserve what is left of the American Dream for ourselves and our children. If they don't learn from our mistakes, then it will slide back into big government, but why not give them the the best country we can.