I would like some clarification about an aspect of this concept that has always bothered me. When the 'Many Worlds' or 'Parallel Universes' part of quantum physics is mentioned there is always what seems to me a very shallow and somewhat ludicrous example given like... a world where JFK was not shot, or a world where due to some coincidence I did or did not marry a particular person, and so on. But, and this is what I would like clarified, is this or is this not the case that the many worlds interpretation means that a parallel world splits off at any quantum event, meaning that there is virtually an infinite split of events that occur from a single electron in an atom, never mind about some macro object doing or not doing a macro thing. In short we could just look at the life of a bacteria or an ant and end up with limitless variations on it's life while the rest of the Universe remains unchanged. In short, is this really science, or have I got this concept all wrong?