By using logic only, you will not know that there is a God. Logic CAN play a part. But it's like trying to taste with your ear. It requires a heart sense so to speak. Put another way unconditional love for all things. Put another way a sense of connection with all things even rocks and the earth, the chair, etc. Put another way, it requires faith. Using a combination of logic, faith, connection, unconditional love, opens the door enough to partially get a glimpse. Meditation helps. Going within. Finding the heaven within ourselves that is connected with the true heaven. Yes you could logically explain away all kinds of emotions God oriented people have. But you can't explain away the connection if you experience it in it's truest form. Don't give up. Develop your 6th sense so to speak so you can truly taste with your mouth instead of your ear.