"Unless God suffers from some sort of self esteem issues, why does he create man so that man can shower love and devotion on him?"

Why do most (healthy) parents have kids? If love isn't part of it, I can see where a lot of problems are stemming from...
But anyway, do parents have kids so they can force them to love, respect, admire, and just like to be with them? Forcing them to do this would defeat the whole point. But when you show your kids love and they freely give love back - that is a big part of what life is all about and a model of what God wants our relationship with Him to be like... Love has everything to do with it. Unless of course you just enjoy bitterness, lonliness, etc