When people talk about life in the solar system like in Europa and they talk about water and heat what they forget is the lighting and or some other large volume of energy injected into the system instantly, or other special circumstances that made life happen on earth. First, you need the chemistry before life can be created. I'm sorry I honestly feel that it is very possible that life is so incredibly rare in the universe so rare it might be possible earth is alone.
The earth may not be alone however I believe the chances are greater of the earth being alone over life being everywhere in the galaxy or even the universe. I honestly think a million holes have to line up perfectly for life to take hold and these holes start with the creation of the star and planet that life will form. Everything has to be just right. When we look at life starting on Earth one could say chance had the power on that planet, not science or any other aspect of the universe just straight-up chance and a lucky planet. The odds of a star holding onto a planet capable of life is so rare, like I said I would put my saving account on that there is zero other life in our solar system and even in our galaxy, That is how rare I feel life is.
No this has nothing to do with religion just from my studies and knowledge of the universe. The fact that life is so rare is one of the first reasons why religion never took with me it. if God created humans then why have humans only been on the earth for 300k years when the earth is billions of years old. also, why would there not be life everywhere if all this had a creator? just does not make sense for a creator to create everything in the universe and then put life on one spec in that universe.
There is nothing wrong with believing in a God, however, for me, I must believe that god created the universe but did not create life at least not on purpose it just came out of the universe billions of years after the universe's creation. Sorry for bringing religion into this but I just thought it fit in this conversation. Once a species like humans become conscience I just think we feel the need to believe in a god because we did not understand how everything we looked at could be possible without a magical being creating it. However, science in the past few hundred years and more so every day gives humans knowledge on how this was all created, To be honest, the only thing science can not explain is the big bang and how the universe came to be, but everything after that point is within the reach of science, making it almost impossible to belive in a god, well unless you belive a god created the universe and then hands off from the point of creation. It a hard but science is wonderful it honestly is amazing the animal species of humans have figured out so much about the origins, the what, how, and why's of the universe and galaxy and earth we live in. Amazing if you ask me!
Also, stop making science out to be like a religion it is not. The word science means "all the collected knowledge of humanity" from studying the world and universe we live in. That is it, one thing science is NOT, a belief or a faith, science is knowledge, that's all. To hate science is to hate all of human history and the knowledge that we as a species have obtained thru millions of hours of study and work. Don't be like that, there is nothing wrong with having faith in the bible, while also taking science seriously, as it was you and your species that have figured all this out, have some pride humans are awesome in that respect. Everything in this content and every content you have ever seen on the world and the universe came from humanity how is that not amazing. As far as we know at this time, humans are the only living species to have knowledge of the universe, That is something to have pride in!