Common sense is always looking for causes to explain events. Police find a dead man on the road. We know when we are causing something. I drive a golf ball from the first tee. Something happens because I make it happen.
Nothing happens without a cause.
A plane crashes and there is an investigation called because common sense assures us that nothing happens without a cause. The cause is there, even if we cannot discover it. Whatever, whoever brought this vast immense universe into being cannot be less than the universe. No cause can be less than its effect. A man with strength to lift only half a ton cannot lift a whole eon.