Let's put it in the perspective of the whole world, not just humans. Do you believe that everything that had to happen in order for life to exist was just a coincidence? Everything around this world has a creator. I know it's not a great example but take a look at your phone. Computers, cars, dogs, cats etc. We manipulated to how we wanted everything I mentioned above. I don't think know one will know the definite answer until we die. Until then, we can have these friendly debates.