Why do some people like to use duck heads as avatars?

I've never seen a duck head as an avatar. This may be a farce! In fact, it doesn't matter what you use as an avatar, it's also a person's hobby. Some people are willing to use animals as their heads, some people are willing to use flowers and plants as their heads, some people are willing to use beautiful scenery, and some people use their relatives (such as children). I think the avatar is a sign, and what you use is your own business. However, I don't approve of using your own child as an avatar, because a child can't support you for a day, and he can't support you if he is too young. In today's society, few people think like me. I am also a psychological person. This is also a hobby. I suggest that it's best to use your own photo as your avatar. Relatives and friends know you at a glance. In order to avoid misunderstanding, it is necessary to use the duck head as the avatar. As long as you are happy, people will be happy when they are alive, so no matter what others say, just be yourself.