Salvation and believing in God is not based on feelings, but feeling are visible. It is based on faith. Feelings go up an down, salvation doesn't. When we feel all alone and lonely He says I am with you always and He comforts us, when we are afraid and fearful, He says do not fear for I am always with you. When we say Lord I just do not feel you near me today, He says, "I will never leave you nor forsake you."
We have no problem feeling the nearness of God and His presence when we are feeling good about the way our life is going, but when the trails and tribulations set in then that is where our faith and belief in His Word comes in and our faith is put to the test. We then as in the good times still stand on His Word by our faith in Him, though the way we feel at the time is not good.
God like parent's does not have to give a reason for everything that He does and doesn't do. He does not have to give us the why to all our question's and most of the time if He did we wouldn't understand it anyway. Children ask the "why" question's all the time, but they are not given the answer's all the time for various different reason's. But they do not turn on their parent's and say well I am just not going to believe in you anymore and run off and never speak to their parent's again. But, if they do a good parent is always there to welcome them back again just as God is.
The Holy Spirit manifest the wonder's of the God everyday. Like you said in the sunset, in the birth of a new born, in the rain drops, and the snow flake not one of them is the same. In the wind, in a storm. In Romans 1:20 He said, For since the creation of the world His invisible attributes, His eternal power and divine nature, have been clearly seen, being understood through what has been made, so that they are without excuse.