We can put it this way: If there is no other life out there, it's a damn huge waste of space.

Now, what always bothered me, is that scientists try to look for planets with similar conditions like earth. But it's very subjective to estimate that for life to be possible, life conditions have to be exact or similar to earth.

Maybe im just totally wrong, but: Why does noone take into account that maybe life could evolve on a different type of planet? Maybe a planet that makes life impossible for US, but maybe enables other lifeforms to life and evolve.

Well just my two amateur cents.