You may have seen the bumper sticker that says, "He who dies with the most toys wins." Whoever came up with that slogan was probably just having a bit of fun at the expense of consumer culture, but it's funny only because some people really do seem to believe that life is about acquiring stuff.
A correct outlook on the purpose of life probably can't be easily boiled down to a bumper-sticker slogan, but the scriptures give us several correctives to the "gimme, gimme" philosophy.
The prophet Alma taught, "Seek not after riches nor the vain things of this world; for behold, you cannot carry them with you" (Alma 39:14). You've probably heard the saying "You can't take it with you." Well, it's scriptural.
So where should our focus be? The Savior has told us to look beyond the way station of this world toward our final destination. He said, "Seek not the things of this world but seek ye first to build up the kingdom of God, and to establish his righteousness" (D&C 25:10).
The stuff we can buy in this world is nothing compared to the gift of eternal life, "which gift is the greatest of all the gifts of God" (D&C 14:7).