I’m not religious, or an atheist. I am agnostic, but I am coming to the increasing conclusion that the universe was created. My reasons for believing this are:

• The sheer size, scale and complexity of it. That something this vast and substantial could come into existence of its own accord and for no reason, is not plausible in my mind.
• The universe is highly organised. It is not a disorganised disordered muddle, but a dynamic, flowing, cosmic organism that functions like a living slime mould. For example, thousands of galaxies flow along routes towards a vast central point called the Great Attractor, which is in itself moving towards another supercluster called the Shapley Concentration. These vast structures are working in an opposite direction to the Dipole Repeller which together create a vast push and pull motion on a galactic scale. These actions and effects imply that it is functional and purposeful.
• The universe is too precise. Numerous, fundamental conditions of the universe appear to be fine-tuned to very ‘special’ values, where even small deviations from these values would have detrimental effects to its existence. The evidence for a fine-tuned universe is overwhelming. The strength of gravity. The charge of an electron. The mass of a proton. The speed of light. The cosmological constant that governs the expansion of space. Almost all of these values exist within absurdly narrow ranges that permit life. Change them by a fraction of a percent, and the universe becomes sterile.
• The axis of evil. Fluctuations in the Cosmic Microwave Background radiation, left over from the Big Bang, point roughly along the plane of the Solar System. Instead of pointing in random directions, these large-scale patterns appeared to share a common axis relative to ours. This pattern has been jokingly dubbed ‘the Axis of Evil’, and it has withstood constant scientific analysis for over two decades.
• Baryonic Asymmetry. The fact that positive matter dominates the known universe is actually very strange, and hard to explain using the laws of physics. When energy converts to matter, according to Einstein’s equation E=mc², it always creates equal amounts of matter and antimatter. In the Big Bang, when the universe was formulated, there should have been a blinding flash of radiation as these opposing particles cancelled each other out. But that is not what happened. By the order of one particle in a billion, matter prevailed and the universe as we know it was created. The margin that allowed everything we know to exist is 0.0000001%. Something broke the symmetry and tilted the scales in favour of all the complex chemistry we see today. 
• The creation of the universe was a sophisticated, orchestrated event. The Big Bang required a faultless balance of forces (e.g. gravity, dark matter, quantum fluctuations, plasma cooling, radiation, particle formation,) acting in just the right manner, at just the right times. It was not a failed, incomplete, or a partially correct process. It happened exactly, synchronously, and perfectly. This could not have happened in such a short time period, and on such a humongous scale, without intention and deliberation.
• The creation of the universe was ‘miraculous’. Billions of light years of stuff, from a pin prick of matter, in a split second. This is extraordinary, fantastical and transcendent. To all intents and purposes, the universe appeared in an instant, out of nowhere, and it didn’t even take six seconds, let alone six days! 
• The universe has great value. The inception of the universe was a purposeful, positive, creative act. Atoms were created in the Big Bang. Matter, water and elements were created in the first supernovae. Galaxies, solar systems, cosmic structures and the basics of life were formed. It is built on positive matter, rather than negative antimatter. It was not a negative, destructive act, like that of a high velocity explosion. It created life, it is structured in a functional manner, and displays behaviours such as the flowing of galaxies along routes and pathways.
• The ingenuity of it. The incredible sophistication, ingenuity and massive scale of the universe suggests a higher intelligence must have caused it. 
• The originality of it. Nothing like it has been observed anywhere in science, or has occurred since. It is a unique phenomena. (We are not able to say that multiple universes exist, they are only a mathematical inference.)
• The chances of life emerging on earth by itself are too remote. Also, some scientists claim that some of the properties of life (e.g. the carbon atom), are too complex to have emerged themselves in the time frame of the universe.
• Everything that has an effect, must have a cause, which in turn means something is responsible for causing it. It is implausible that such a vast, cosmic organism, displaying function, motion, action and dynamism, came about by itself, for no reason. To suggest life is meaningless is nihilistic.