Most investors would agree that Visa is one of the best businesses in the world.Visa (V -0.19%) has historically been a wonderful investment. Shares have climbed 1,790% higher since their initial public offering in March 2008. That gain would've seriously boosted one's portfolio performance, without a doubt.Shares currently trade 8% off their all-time high (as of Aug. 22). Besides the recent dip, here are three reasons investors should consider buying Visa stock like there's no tomorrow.Steady growthInvesto ...