Bro simple mathematics and physics proove there is lots out there.
really?
actually thats not true. the existence of almost infinite possibilities at the same time approaches infinite impossibilities.
the one thing that people dont realise is that it isnt just what's out there, it's about "when" it's out there. In addition to the 3 main dimensions, we have time.
Sure, we couldve had life elsewhere, but at what point along the timeline?... lets say we are here for 1 millionth of the total universe's timeline..then we are looking for life existing during that timeframe. its like randomly pointing a camera in a direction and taking a picture and expecting life to be there in that one frame.
so, despite the endless expanse, there is only a tiny pinhole of opportunity, ANDS, as said before, as something gets infinitely large, it gets infinitely small at the same time. So mathematically we are looking for a poofteenth of a microsecond into a massive piece of space that is really, relatively, a grain of sand.
oh, and vice versa. to summarise, the more space and time we find without finding life, the less likley we are to find it ever.