Yes, it's called "quantum immortality": https://en.wikipedia.org/wiki/Quantum_suicide_and_immortalit...

Personally, I disfavour any model with infinities in it (infinite universe duration, infinite spatial extent, infinite branching of wavefunctions, the infinite ensemble of possible multiverses in The Mathematical Universe) because all of them suffer the same Bolzman-brain cognitive instability.

Yes I read about it. First of all please let me point out that I have very little knowledge about all this, I'm just a fan of physics.

But the thing I don't understand about all this is that if the many-worlds interpretation accepts quantum immortality then wouldn't that collide with the second law of thermodynamics?

No. The second law of thermodynamics states that high-entropy states are more likely than low-entropy states. Quantum immortality means that you can only observe a state where you're alive. In combination, you're more likely to observe a high-entropy state where you're alive than a low-entropy state where you're alive.

That is, under quantum immortality, your body will keep accumulating non-lethal damage and your suffering will never end. It's quantum immortality, not quantum eternal youth.

This assumes that there are infinite branches of reality, and some of them are offset in time (and in some we are aware of other branches in those realities - otherwise, how do you avoid death?).

With that, probably until we die of age, so, 120-something?

But this is too speculative and with out understanding of world - impossible