What Schrödinger’s cat REALLY means

I find superposition of states already hard to swallow because I think what is in superposition is our ignorance of the system. We simply cannot know because we haven't looked yet. But the state of they system won't depend on whether or not we are looking. No system is really isolated so the system won't know whether we measure it or if it is just some background noise that it is interacting with. The system will be in a defined state, the cat will be either dead or alive, we just don't know yet. The Schrödinger equation in the end is not reality itself, we just use it to describe reality.

As with the Many worlds interpretation, there we leave the realm of physics and enter the realm of philosophy or religion even. Either way, we won't ever get experimental confirmation about parallel universes that pop into existence each time each and every particle in the universe undergoes a state change. Many worlds is as unphysical as young earth and creation.