The reason why so few people love God is because they do not have in them by nature the kind of love to love Him with. God can only be truly loved with His own love. We must have Divine love imparted into our hearts, by the operation of the Holy Spirit, before we can truly and Scripturally love God.
There are two words in the Greek Testament for love. One word, philos, signifies any natural human affection, which all men have. The other word, agape, signifies Divine love, the feelings and character of God. Just as we get human affection by our natural birth, so we get the Divine love by our spiritual birth into the Kingdom of God.