should we improve our Genome?

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Now that we have decoded the human genome,why don't we improve it? Everyone would like to have children who are healthy,beautiful and gifted.But people vary widely in all these qualities,depending on their parents' genes,and the pure luck of the draw at conception when each child gets allotted a random selection of half the parental gene pool. Most human genes exist in several different versions in the population: some of them are great to have,some so-so and some downright deleterious. Then whether should we improve our Genome, So that all is great? I don't know, you will tell me?