If we talk with respect to religion, there's no other life.
But Science asks to stay away from religion in biological method (solving a biological problem). If we talk with respect to science, then there's no doubt that Universe is not so small, In Milky way, there are millions of solar systems, just as ours, there may exist some life in milky way. If we go far, there are infinite number of galaxies, and they also have infinite amount of Solar Systems and uncountable Planets, so there's no doubt that there is another life. Or maybe, there are more than million types of aliens living in different systems of different galaxies. Or maybe nature has set us in such a way that no different life can reach to each other. But as I said earlier, there may exist another life if we talk with respect to Science and I don't think we'll be able to reach to them.