Should I obey God because He wants me to obey Him and gives me rewards?

I find obedience a by product of love.  I am engaged to marry and my fiance loves me.  Now because of this she obeys when I ask her to do something or other. God's justice is in his nature as much as his holiness, jealousy  and love. If we were to obey God only because He gives us gifts then we love the gifts and not God. In Job 2:10 it says if we are happy to get good gifts why can't we rejoice when we are hurt by God. God's desire for us to be obedient is because He wants us to find Him our only and greatest treasure. Absolute obedience comes with absolute surrender and I think it's this what we should wake up each day for. See where in our lives we have not surrendered. I find sometimes taking five minutes extra in my morning devotion a pain, but God let's me in my pace to surrender my hold onto my precious five minutes. The rewards is only going to be in heaven, and the reward is meeting Him in all holiness ; what we get here on earth is still His mercy. Even the fact that I wake up and know I am Subin is still His mercy.