Please help me understand dividends

I'm eyeing both SCHD and VOO; however, how is a dividend payout better than capital appreciation? The latter doesn't require you to pay taxes on the gain correct? Also, since a dividend payout decreases the NAV (a 100 dollar stock paying out 10 dollars in dividends turns the stock into a 90 dollar stock), aren't dividends simply moving money from your left pocket to your right pocket and getting taxed on it? Please correct me if I am wrong as I am interested in both SCHD and VOO; however, if I am correct and dividends are just a forced stock sale mathematically...what is the appeal of SCHD then?