A couple days ago I submitted a link to the Great Filter article on Wikipedia https://news.ycombinator.com/item?id=14095912
It basically proposes a theory where life, being very common in the universe, eventually reaches a point (filter) that prevents it from stepping up in the Kardashov scale: http://28oa9i1t08037ue3m1l0i861.wpengine.netdna-cdn.com/wp-c...
You are simply putting ourselves beyond the Great Filter, although finding life in Enceladus could drastically affect that: http://28oa9i1t08037ue3m1l0i861.wpengine.netdna-cdn.com/wp-c...
More info on this topic: https://news.ycombinator.com/item?id=14113461
