And yet every mission to Mars has a major component searching for evidence of life e.g. [1]. How long before space agencies stop bothering? I guess the whole

And yet every mission to Mars has a major component searching for evidence of life e.g. [1]. How long before space agencies stop bothering? I guess the whole "could be evidence for possible biological activity" thing is only part of the science, but it annoys me that its given such a large apparent weight. https://en.wikipedia.org/wiki/ExoMars_Trace_Gas_Orbiter https://en.wikipedia.org/wiki/ExoMars_Trace_Gas_Orbiter