In math, if you divide an infinite number by any number, no matter how large, you still have an infinite quotient. So Jesus' love, being infinite, even though it is divided up for every person on earth, is still infinitely poured out on each one of us!
Normally when I've been in the position where I've felt little love for God, it's because I haven't understood how much He loves me. The more I understand how much He loves me, I mean it's unbelievable, it's almost parallel the more I come to love Him, that's been my response.
Often it is hard. So hard, in fact, that Jesus' decree to love and pray for our opponents is regarded as one of the most breathtaking and gut-wrenching challenges of his entire Sermon on the Mount, a speech renowned for its outrageous claims. There was no record of any other spiritual leader ever having articulated such a clear-cut, unambiguous command for people to express compassion to those who are actively working against their best interests.
When I say, "God is love," what do I mean by it? Why this, that God sent His only-begotten Son that we might have life in Him. We still carry about the old nature; but, blessed be God, many a time as Satan has caught me, he has never destroyed me; there is the propitiation,--I am inside, sheltered by the blood, and forgiven.