Christian have their life together , Why people make fun of us?

I've noticed unbelievers always making fun of us Christians. I ask my sister what is the main reason she does not believe. She goes on telling me how she can't believe in something she does not see. She referred as the invisible men in the ski and laughs which it bother me. Yet her life is crazy out of control drinking and going out at night weekends. Later laughs at me calling me a grandma.

Christian have their life together , Why people make fun of us?
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