What makes you feel sad in the process of learning photography?

I don't understand what sadness is. I am not a fan. I am a professional and dare not say how good I am. But over the years, I supported myself, got married, and then divorced. Now that I'm alone, I have nothing to worry about. Learning photography is not sad, whether because of hobbies or for career. If you really like it, you really can't be sad unless you are someone else's apprentice, bullied by others and sent away by others. Either you are burdened with the burden of life, you can't breathe, and everything is the same. Otherwise, there should be no sadness, only physical hardship. So I feel lucky in this line of work and I have more free time.