Do i think life exists elsewhere in the universe? Yes. The odds are astronomically (pun intended) in favor of life having developed on other planets.
However, that doesn't mean that we are going to be making contact anytime soon or ever at all. Ever heard of the (I think its called) vast jungle theory?
There is a school of thought among cosmologists that sees the universe as an unimaginably large jungle. In the jungle there are all types of plants some are huge some small some have been growing for hundreds of years some just sprouted up over night. All these plants are different in a thousand different ways and, like the life that exists in the cosmos, most are unaware of the existence of others. Why, for example, would a towering and ancient tree pay any notice to the tiny crop of moss growing on a small rock nearby?
Like the tree some civilizations out in the vast expanse of space may be so far beyond us that we go unnoticed. The same way you don't really notice the lichen that grows on the rocks alongside the trail you are hiking on.

Not like i really know but hey, food for thought.