We worship Him out of gra ude for WHO HE is.
Holiness demands worship.
GOD is without beginning or end... HE has always existed. That is an amazing notion in and of itself that goes beyond human comprehension.
We are so insignificant in terms of size, strength, knowledge, and even the duration of our puny short-lived lives. And yet, GOD loves us... knows everything about us. Worship should be the normal response to His affection. Reverence is only required because again, He is supremely Holy. And deference should be shown simply out of awe for his grandeur.