I read there at least 2 Million earth like planets orbiting suns in our galaxy alone but even if we were to travel at the speed of light it would take us ship time 28 yrs to reach the center of our own galaxy but for the rest of us on earth 30,000 yrs will have passed, we may very well have life on each and every single planet but we wouldnt be able to contact them with our current or even near future technology and if they are just as evolved or just a little bit more evolved then us they probably wouldnt be able to contact us yet either , but we must never stop trying