IamJoseph
Then you should put your reasoning on 'HOLD' - and wait till ET knocks on your door. This has not occured for 4.5 Billion years.
The reason is less to do with the unlikelihood of an intelligence out in the depths of space somewhere and more to do with the obstacles that must be overcome to traverse any distance to another star system just on the basis of the physics. This is neglecting the resource requirements to transport life forms over those distances nor the means of marshaling those resources on a planet to basically throw it away for all practical purposes.
To travel at the speed of light would take us to the nearest star system in just over 4 years. 8 years not including time spent at destination. However at just 1/3 the speed of light free hydrogen in space becomes the equivalent of cosmic rays and somewhat detrimental to survival. delicate electronics fry life support is threatened and due to location AMA is really tough to get ahold of.