Do you believe in extra-terrestrial life?

I firmly believe there is life out there. Just because we haven't discovered aliens, that doesn't mean they don't exist. The earth is microscopic compared to the universe. Therefore, I believe saying we are the only ones in the entire galaxy sounds as asinine as saying the earth is flat or that it's the center of the universe. That's what everyone beleived until Christopher Columbus and Nicolaus Copernicus proved them wrong. Galileo tried to substantiate that, but he had to axe his theory. Giordano Bruno believed there was aliens out there. Consequentially, he was accused of witchcraft, tried for heresy, and burned at the stake. Until we can ascertain there is extra-terrestrial life many will remain skeptical. In the meantime, I'm wondering if anyone here believes there are aliens among us. Please don't be shy.