I love C.S. Lewis's analogy that just as a car is made to run on gas, we are made to run on God. Nothing else will work for the car and nothing else will work for us. God is the fuel our spirits were designed to burn and the food our spirits were designed to feed on.
Those who are indifferent to God or actually reject Him, live only for this present world and it's rewards. The satisfaction is temporary and true joy is just out of reach. There is a pleasure and success mentality of our age that resists all pain, discomfort and delay.
Paul says in Romans 11:33-34, Frankly, I stand amazed at the unfathomable complexity of God's wisdom and God's knowledge. How can man ever understand His reasons for action, or explain His methods of working?
For me, my love is so deep for God, I don't question Him with why. I do it with blind faith. I have everything I need for today, to run on God.