I'm specifically responding to the prickweasel who has blinders on, who thinks Obama can do no wrong and Trump can do no right. No, we aren't all partisan political hacks.
Apparently there is optimism in the business sector since the election of Trump that has sent the stock market higher, even despite the Fed raising rates. Usually tangible benefits to consumers lags behind a stock market rally by a year or so, so assuming the market holds, expect to see salaries and consumer spending rise as well (...and inflation, of course).
People are always predicting a correction. There are, and always will be, people who are extremely bearish (or extremely bullish) regardless of the condition of the economy, and some schmuck reporter looking for clicks is going to quote them. It may go south tomorrow, or it could hit 25K by the end of the year on its way to 30K by 2020.
The bottom line is, people are demonstrating their confidence in the economy and specific businesses by investing and bidding up stocks, and they have been persistently and particularly confident over the last 9 months, which not-so-coincidentally corresponds to the election of a certain president.