"Whilst it has been stated by some that they believe our existence is nothing more than random "
Who on Earth says that? There's nothing random about our existence. You, for example, are here because your parents had sexual intercourse at some point. Half of your genetic makeup is from each of your parents. Nothing really random about that, and you have that in common with every other species that reproduces in the same way, from the lowly mouse to the human.
Randomness does not play much of a role.
Depends on the couple, doesn't it?
Exactly, there are those who want me to believe in in randomness, yet I know from personal experience that does randomness does not believe in me.