I doubt there is much life in the universe. To be honest there are many reasons for my argument:
Firstly, The universe is a COLD inhospitable place, in fact the universe has more space at absolute zero than it has stars output heating. While some might claim "but life can evolve to live in freezing conditions" you should take note that cellular operations slowdown when frozen or even suffer damage through ice crystals. If you suggest that life itself has a food-cycle in which plants and animals feature, you could imply that if the food-cycle itself is broken through the food not being sustainable due to freezing temperatures; life can not support itself.
Secondly, I'd class myself a futurist and have a reasoning that this whole universe that you see before you can actually be made by mankind over time. This means we'd get to decide what mathematics or algorithms were used for populating the universe and there would be very real discussion on how to handle "A potential Alien threat". You see if we make the universe we can decide on if aliens exist, and what technological level they are at compared to us, however this generates problems as it could create conflicts between them and us because there would be some that might attempt to apply classism or treat an alien race as slaves, or us for that matter that way.
Ideally creating a giant universe "Sandbox" without fear of having another "top of the food-chain predator" to contend with would give a number of countries military's peace of mind, however it would obviously completely undermine all the fruitcakes out there that think they are in contact with aliens.
And this is before pulling the "if they are out there why haven't we noticed them" arguments which I'm not going to bother with because they are old.[
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