NiceGuy: infinite is a nice concept, but it is a comparative term.
infinite is only infinite when it's too big to put in a relative term. So there are definitly no infinite planets able to sustain life.
And have you considered the possibility that they are millions of years behind in technology too? The odds are 50% I'd say
Have you also considered that even with alot of advancement, it may still not be possible to traverse the huge distances, or even to simply *find* other civilisations, since there are such an infinite number of planets.
So I'll go as far as to say 8 planets with life. Why? Cuz it's a nice and symmetric figure
