Why the WAVE FUNCTION COLLAPSES ? This is arguably the most important question yet to be answered in Quantum Mechanics. There are 3 possible answers already existing in the Science world.
1)Copenhagen Interpretation
2)Quantum Decoherence
3)Many World's interpretation.
I tried to understand this. And I feel it's the mix of Quantum Decoherence and Many World's interpretation. I have been talking about RESONANCE and OBJECTIVITY-SUBJECTIVITY things for a few years now. What Quantum Decoherence is basically RESONANCE with the environment. Many Worlds interpretation means OBJECTIVE REALITY being interpreted as various answers according the SUBJECTIVE NATURE OF different Observers and Different Environment.
I am still trying to fully understand this phenomenon. This is a wild guess in the middle of TRIAL and ERROR METHOD while studying Physics.