Because you will be happier if you do what you like, but doing the right thing does not necessarily make you happy. Most of the time when you do something you don't like but it's right, you don't do it out of your original intention and you don't particularly want to do it. Doing something you don't like but you think is right is quite contradictory, and your will will be overcome by reason, and you will be constrained by some objective factors, traditional concepts and secular ethics. So don't like it.
In this era of social diversification and blooming individuality. Many young people like to be themselves and pursue the things they like. Like a free and unfettered life. People like to live how they like, and many young people like to take risks. Once you make a decision, you work hard in your own direction instead of looking forward and backward to measure the consequences, gains and losses, and then judge whether what you are doing is right. There is no absolute right or wrong in the world. If you are affected by some external influences and bound by some concepts, you will stop and give up doing what you like, and choose what others think is right and what you should do against your will. Such a character will become routine and lose themselves.
Many young people now dare to take risks and innovate. They can face their hearts sincerely and bravely, and pursue the life they want. Such people pursue self-realization, are not affected by other people's opinions, and do not care about the eyes of the world. They don't want their lives to be affected by the world's view of right and wrong.
On the other hand, some people do not face their hearts honestly. I always waver between things, but in the end I choose the right thing rationally. Sometimes this choice may end well, but most of the time you regret it. Nowadays, many people of the previous generation have complained about their original choices and lamented that it would have been better not to listen to so-and-so. Leave regrets in your life. Therefore, liking what you like is a manifestation of being true to your heart.