the reason why spirituality is very important is because it is reality. you are not a human being having a spiritual experience , you are a spiritual being having a human experience and this goes beyond belief.
you need to understand that you are a soul inhabiting or attached to or in connection with a bodily form for a period of time, whether that is 70, 80 or 90 years. nobody knows exactly how long that will last but that is the reality of who you are.
who you are is not your body, it is even not your personality, your background, the trauma you have suffered or everything you have been through. those things may shape your human experience but they do not define the entirety of your existence. there is a spark of the divine within you, a reflection of the majesty of god, the divine presence, the creative force just like a sunflower naturally turns towards the sun and follows its movement throughout the day, that is reality.
you too must learn to turn towards that divine presence within you. that is your reality and denying that reality does not benefit anyone, least of all yourself.