Ecclesiastes 1:2,3 (KJV)
2 Vanity of vanities, saith the Preacher, vanity of vanities; all is vanity.
3 What profit hath a man of all his labour which he taketh under the sun?
Vanity
If you feel impelled to have the best things in life, those things that you gain are all vanity. Also, the things that we do not need but gain anyways is only acting out of covetousness.