Why do some Christians feel the need to force their beliefs on others, especially children or teens?

I ask this because I saw something recently about an older sister wanting to give her younger sister an exorcism because she doesn't believe as she does.

Keep in mind here I do not believe all or even most Christians are like this. I married into a very Christian family and the definitely are not like this.

Picture provided of the original question for context only.
Why do some Christians feel the need to force their beliefs on others, especially children or teens?
Why do some Christians feel the need to force their beliefs on others, especially children or teens?
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