While I can appreciate the caring sentiments of those that have religious acquaintances, it does not excuse the absurdity of the idea that God exists, especially in the many contexts that have been perpetuated by man. It is without question, no more silly to believe in God than it is any other made up fantasy.
Should there be any doubt, I ask just one simple question: If God created man and all that we know, then who created God? If a God created God, then who created the God that created God. See a pattern? I'm sure some would argue that nobody created God and that God has always existed. Should this be the case, then I would argue that the Universe has always existed, and I sound a lot less crazy saying it. There never was a beginning and there will never be and end, only a change in state. It is impossible to comprehend infinity, so we never will. It isn't something that can be solved, only accepted.
The bottom line is, though the Universe may be infinite, the state of matter and energy is not. Some day this planet will no longer be able to sustain life due to any number of infinite variables. Our time in existence is short, so we might as well make the best of it while we can. Science forbid that we are able to extend our chances of survival by using our knowledge of technology to better ourselves and find new places to call home long after Earth has expired.
If you aren't part of the solution, you are part of the problem.