Life After Death Is Impossible, Says Scientist

[Irreligious Atheist]

It's probably very rare for a base reality universe to be finely tuned for life like ours, 

How many universes have you seen?

but simulations would be way more likely to be finely tuned for life because the programmer would likely want things to be interesting, and life is interesting.

Interesting according to whom?

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Might be super duper ultra rare, seeing as how we don't know of any universes finely tuned for life like ours - including ours.

Or any other universes in general

If our constants were just slightly different, life as we know it would not be able to exist. It logically follows that it's probably very rare for universes to exist with the possibility of life as we know it because they aren't finely tuned for that. Ours just happens to be one of the ones finely tuned for that. It could have been tuned a hell of a lot of different ways, but it has to be a very certain way for life to come to be.

According to whom would a simulation with life be more exciting and interesting than one without? Are you serious? Yeah, I'm sure most would rather just create a bland universe to study and observe, rather than one with life and civilization.

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Another non sequitur, and it doesn't help that you got the relationship between the universe and life like us and tuning™ completely backwards.  It's not an issue of who or what, our universe isn't tuned for life like us, at all.  Were finely tuned for our universe..and with respect to sims, we imagine something much the same would be true.  The computational power available to the system running the sim would put constraints on the types of simulated life possible within it - not the other way around.

Then how did we come to be? We came to be because our universe is the type of universe with the potential of creating us. The tuning made that so.