For me it is magic to say that dead matter came to life.
I perceive less of a problem there, perhaps because I conceive of life
functionally. 'Life' is what living things
do. Hence I conceive of a living thing as a
system (or more accurately a whole collection of nested systems). The components of the systems needn't themselves be alive and do appear to be complex biochemicals. The important thing is how these non-living chemicals come together to perform physiological functions, rendering the whole interacting collection of chemicals "alive".
I'm also happy to acknowledge the idea of multi-realizability, and am willing to call a robot whose mechanism performs similar functions "alive" as well.
There is more to life than chemistry even if science wants to define it these days as an emergent property of matter
Philosophically, I don't really know what to make of metaphysical emergence. It's another of those fascinating unresolved issues.
But no, I'm not any sort of vitalist and don't believe in some spiritual "life force" that animates living things. If you do, I won't attack or insult you for disagreeing with me.
and claim in the end to know where life came from because of a redefinition of "life".
I think that the origin of life is one of the most interesting remaining open questions. Despite a lot of bluster from some directions, we really don't know the answer. (And as I argued above, we likely never will in any detail.) But I do tend to conceive of the question in naturalistic ways and would look for the explanations in chemistry I guess.
What we do know now is that life can only come from other life.
That is the state of scientific knowledge.
Anything else is speculation.
Yes, all the life we see around us today is descended from prior life. So every living thing has a long family tree extending all the way back to the origin of life. We still know very little about that origin. Though we do have countless speculations about it.