Roughly half of all U.S. stocks pay dividends, making it a huge investable universe, with this one ETF letting you buy the best of the best.The U.S. market is huge, with a combined market cap of around 63trillion.ThereareallsortsofdifferentwaysyoucansliceanddicetheU.S.stockmarket,withthetopETFsofferingplentyofvariety.Butifyouareadividendlover,youareonlyinterestedinabouthalfofthetotaluniverse,whichcutsyourinvestableuniversedownto"just"30 trillion or so.If ...