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An alternative is we are among the first. Third generation stars are the ones that have planets with enough heavy elements to allow for complex chemistry. Sol (our star) is thought to be among the first batch of third generation stars in our gallexy.
Light speed does seem to be the upper speed limit for the universe. Talking that into account we probably haven't had a chance to see other early life as it would likely be spread pretty thin right now.
Yeah, I have a gut feeling that a lot of the variables in the Fermi equation are a little too generous.
This is my favorite, mainly because it's been well argued by some respectable scientists.
Another is that we're in a simulation, and aliens aren't part of it. There are also some very good statistics pointing to the simulation theory, from just sheer scale.
I do agree that in the grand scale of things we're actually very early. That alone would explain a lot.