Actually it isnt infinite,its 7 billion lightyears big,but its growing in light speed,even if in the new territiory are no planets,they will form form over millions of years.I think its silly to think there is no life in outer space,i just think they are waay to far away,probably they are many folks which are alike to us,many more progressive ones,but that never "aliens" came to us or took our planet as a colony millions/billion years ago shows in my opinion theres nothing like over light speed and aswell no infinite life or actual usable wormholes because if thats the case folks that are way older would have invented it,but i think we can do insane shit with science we cant imagine now but apparently not this.
And its stupid to think we stem from alien,biology proves otherwise and it makes sense.