Yes, I think there are many times when people have to pretend to smile, especially in formal situations. For example, at work, you might have to smile at your boss or customers even if you are not in a good mood. Also, during job interviews, people usually smile a lot to make a good impression. It's just part of being professional and polite.

Yes, sometimes people pretend to smile just to avoid hurting others' feelings. For example, if someone gives you a gift you don't really like, you still smile to show you appreciate it. Or at a party, even if you're not having fun, you might smile so you don't seem rude. It's a way to keep things polite and avoid awkward situations.

No, some people don't like to pretend to smile. They think it's better to be honest about their feelings, especially with close friends or family. For them, showing real emotions is more important than just being polite.