You are born at T0 live 90 years and die at T1. During that period, you were conscious as we define it--you had experiences, you recalled them. Now you die. What becomes of your consciousness?

It stops?

T0 to T1 becomes missing time, total unconsciousness. Since you were conscious between T0 to T1--contradiction. Conclusion: death does not extinguish consciousness.

Cobblers. It might, or it might not. I think it does, having seen nothing to the contrary, but certainty is currently impossible.

Quantum physics has proven experimentally that consciousness collapses the wave function of a wavicle into a particle, into matter. So to hold.. (etc.)

Quantum physics hasn't proven anything yet.