Thanks for the answers so far, they make very interesting reading...
Love, to be love, must be given. If that love is not returned, God is not capricious or petulant. God does not then withhold love.
For all intents and purposes, God does not want to be worshiped for his own validation, he wants you to worship for your own validation.
If I can follow-up to both of you, why then (if he is not petulent or if worship is for our own validation) would God reward worship and punish those who don't? To basically rephrase JSojourner, if your reference to "reward" and "punish" means heaven vs. hell, I have no good answer for you. This is one of the reasons I don't follow Christianity myself, as they is simply no answer for it. Anyone who pretends they know if worshiping God results in eternal life
is simply a liar. I can tell you this, however: the actual act/lifestyle of worship is NOT what most Christians believe is necessary for salvation (not by works that no man can boast, to paraphrase an actual verse) as this would violate the "saved by faith alone" tenant. But that's a whole different bag of crap to sort through to find the peanuts.
Alternately, if you meant "reward" and "punish" as in everyday life, I don't believe God does. Look around you. Who is healthy, wealthy, and wise? What religions do they adhere to? They're all over the place. There is no trend line. If there were, we would only have one religion. God does not reward or punish his followers in this world. Anyone who says they think they know otherwise is either a liar or delusional. Just be wary of the sea of anecdotes.