I am a christian - Jehovahs Witness.
This is what we believe. The truth about what the bible teaches, and we stick to it as closely as possible. Hence why we dont vote for human governments ( as Gods kingdom with Jesus as king will replace human rulership and as the bible says in the end, will be the only hope for makind), hold high moral standards, dont accept blood transfusions, pray regularly and preach to others about this coming kingdom as Jesus did and asked his followers to do also, we dont celebrate pagan customs such as Easter and christmas - we still celebrate Jesus' death tho of course.
We believe as the bible teaches that we and everything around us was made with such precision, wisdom and love by our creator, God. Even the most simple things around us, the house you live in for example, had a designer......so it seems crazy to me to not conclude that our amazing planet, our brains, our bodies were not created with a purpose also
The bible also teaches that the world as we know it now, is not was the way it was meant to be. It was created as a perfect paradise where humans were to live forever, in perfect health, peace etc.
The world as we know it now as the bible teaches, is under Satans control and from world events that the bible speaks of that would be on a scale never seen before ( great wars, earthquakes, moral breakdown etc) we know that we are close to the time when God will step in and restore what was his grand purpose for us.
The reason he didnt do so sooner is because his right to rule was challenged by satan right back in the garden of eden ( were humans better off without gods guidance or could they rule themselves? Did God really know what was best for us) Time was needed to prove that humans were not better off without their creators guidance. Humans needed to reach their peak, many types of human rulerships had to be tried tp prove that we cannot succeed without Gods direct intervention - are we better off without Gods rule? We only have to look at the world around us to answer that question and it is clear to see Satans influence everywhere. And it is clear we dont know what we are doing...we are destroying the very planet we live on!
The bible not only teaches this but also is a historical account of early humans....gives guidance on how to lead a successful, satisfying life right now.