Games are like that. Everyone thinks because games are easy to play, they must be easy to make. The challenge of a making a game is significantly harder. When we design a utilitarian tool, we have to make a complex set of requirements simple and easy to use for the user. But when making a game, we have to take equal amounts of complexity and make it simple, easy to useand fun. If a game is not satisfying to play, people will put it down. If excel is not satisfying, people will soldier on because math is more unpleasant than excel.