The fact that we're the only planet for light years that supports life is because life requires the right temperature and atmosphere to be sustained.
Every other planet is either too close or too far from their star, and is too hot or too cold. There is a fraction of the planets in the galaxy that can sustain life.
You're an idiot.
Life on earth manages to sustain and thrive in the most extreme climates. It doesn't require some golden temperature or atmospheric combination.
We have hardly surveyed any planets to say that they are all too close or too far from their stars. Most of the planets we have surveyed are gas giants, because that's all we could really detect. A new line of telescopes are being deployed so that we can actually spot earth sized planets and make a valid argument for or against extra terrestrial life.
I would argue that you are an idiot.
That being said I believe there is a 100% chance of life being out there, in every shape and form. Statistically and logically speaking it makes perfect sense for the galaxy to be absolutely crawling with life. The fact we haven't spotted it yet is a moot point. The vastness of the galaxy and the universe itself is so incomprehensibly great that it would make sense we haven't spotted life just yet, and we probably won't for a while.