What if you don't have the ability to distinguish between good and bad, so you will always be unhappy. I don't know if I'm joking or being sarcastic, but I care about whether it's true or not.

Think deeply, think about the good and the bad, then remove the impossible and think about the possible.

To communicate with others, you must have a certain level of education. Others can judge whether they are joking or sarcastic by listening to the tone, eyes and expressions of others talking to you.

As for care or sincerity, I can only tell you these. Everyone is selfish. Don't doubt as long as it doesn't hurt you and is harmless to him (her).