Of course you miss the main point
The so-called circadian rhythyms could be from the day-night cycle, temp variations, etc.
I would love to find life on Mars.
I just think it is unlikely that it has ever existed there.
I think we are going to lear a lot more about CO2 chemistry before it is over, and very little about xeno-biology.
I too want a moon base, but not one wasting space and resources on an isolation lab we don't likely need.
Ed