I'm sticking to, even if there is other life out there for us to find, it's so absurdly far away that we'd never be able to reach it with our current technology. Let's say we come to see a planet with clear intelligent life on it 10 thousand lightyears away. We even have the technology for an infinitely replenishing spaceship to take humans there to meet them at lightspeed. We reach there 10 thousand years later...and their frivolous race wars ultimately lead to the use of superweapons which obliterated the planet and all life on it. They just couldn't get over the shape of their nipples.