I think we might actually live long enough as a species to find evidence of other abiogenesis' occurring...whereas I am less certain there is enough time left in the universe for us to prove anything to do with string theory
(And I say that as a physicist!)
At least we have other habitats in the neighbourhood that actually stand out as candidates, that with a bit of effort we can actually reach and explore. As you say, a very worthy goal of scientific exploration.
[Note - perhaps we find something on Europa, and something still alive deep buried in Mars...but perhaps there was a form of panspermia within the planets of this solar system. That it did originate on one place and was transported by large meteorite impact throughout the system??? We'll only know if we get there and take some samples...]
I think the difference in our views is that I think you believe abiogenesis is highly implausible and improbable. Whereas
I just don't know. Your position might be true. Perhaps, even, there was some sort of 'higher being' that was involved in seeding life on a barren, just cooling, Earth. (Although saying something like that, with no evidence, is 'propping' up your theory even worse than the abiogenists who at least can do some biochemical experiments...but, hey, that's my own opinion!)
But we have hypothesis and theories - and let's try them out by looking for fossils on mars, clouds of bacteria on Venus or ocean dwellers on Europa. At least these are reachable goals.
