In Psalms it says, “Fools say to themselves, “There is no God” Psalms 14:1(NCV).
If there isn’t a God then people can live however they want to live, without having to be accountable to God. If they believe there is a God then they will have to be accountable which means they will have to learn about God. That takes effort and many do not want to take the time it takes to really know Him.
Believing in God is the first step towards knowing Him. Maybe it’s time you take that step.