there are many reasons people make Coin, first as a business tool, long-term investment, and betting on financial aspects, meaning that the person who made the coin has the knowledge that Cryptocurrency will definitely be great in the next few years.
the most important thing that people think about when they make their own coins is in the hope of earning profits from the sale of their coins. but it's not that easy, now investors are smart in choosing between potential coins and not. of course if they don't get many supporters there will be no benefits