God can speak audibly or appear visually to us if he so chooses, so not hearing or seeing him does not mean at all that he is not with us. Attain union with the Lord through the Holy Eucharist and you'll know him personally without needing to hear or see him. Jesus said to Thomas in John 20:29, "Have you come to believe because you have seen me? Blessed are those who have not seen and have believed." I choose to be blessed this way. If I ever wish to see the Lord now, it'll be only because I yearn for him.