Day 1
Why believe in God?
First Cause: From nothing comes nothing.If so then how can a universe so big and complicated can orginate from nothing. Science says everything started with Higgs boson or God's particle.But there is no explanation to how did it orginate. Everything must have a cause.If we keep searching causes that will be an endless journey unless there is a Cause which doesn't need any cause. God is that first cause which doesn't need any cause.
Fine tuning: Stephen hawkings has admitted "The remarkable fact is that the values of these numbers [the constants of physics] seem to have been very finely adjusted to make possible the development of life." The cosmological constant which controls expasion speed of the universe must be fine tuned to 1 in 10120. If we increased the strength of gravity by just 1 part in 1034 of the range of force strengths (the equivalent of moving less than one inch on the universe-long ruler), the universe couldn't have life sustaining planets. Ratio of masses for protons and electrons - If it were slightly different, building blocks for life such as DNA could not be formed.
Laws of Science We are able to study science because there are laws in nature.If universe was a result of unguided process in nature, it would not have an order