LUCK - An erroneous perception of reality!

One often comes across phrases like you are lucky, luck is on my side, good luck, bad luck, you just got lucky, best of luck, in luck, out of luck, as luck would have it etc. To my knowledge, almost everyone believes in luck. The thing which I don't get is why people go in for luck. The whole of the human race in my perspective could be classified into three broad categories videlicet

.Those who believe in the existence of God(theist).

..Those who don't believe in the existence of god(atheist).

...Those who are skeptical about the existence of God but does not profess true atheism(agnostic).

If a person is a theist, why should he believe in luck when he believes in God? and if he still persists to believe in luck,
.Is luck another God?
..Why doesn't one worship luck?
...Who is bigger and greater,luck or God?

If a person is an atheist, why should he believe in luck when he doesn't believe in God? If he still persists to believe in luck,
.Is luck superior to God?
..Shouldn't he be believing in his efforts rather than luck?
...How can he put his faith in luck when he can't put his faith in God?

If a person is an agnostic, he must be skeptical about luck's existence if he is skeptical about God's existence, if not, well then it's just his misestimated clairvoyance!

LUCK is just a four letter word which has a meaning in the dictionary albeit has no meaning in real life!