Parallel Universes or...Not

Ok, i wanted to tackle this today also. So called "Parallel Universes" are correct in their name, but it seems that there is a misconception in what it means exactly. In space, there are most likely parallel universes, universes that are literally parallel to ours. BUT, not in their contents. After our Big Bang, there has most likely been many others, but why would they be similar to our's at all? There would be no reason for them to be, they would be under completely different circumstances. Impact, heat, direction, cohesion, and movement would all be incomprehensible variables to overcome for there even to be a planet name "Earth" in a Hubble class galaxy as ours. The chances of even one galaxy being exactly like one in this galaxy are unimaginably low. So, the galaxies are parallel only in position, not in what they contain. Dimensions however, are a completely different story.