Pointlessness in a sentence and paraphrased in a sentence.

Here are examples of the word/phrase "pointlessness" used in a sentence and paraphrased in a sentence...

Arguing with her is utter pointlessness because she is stubborn and hard headed.

Arguing with her is utter futility because she is stubborn and hard headed.

Why do you think there is pointlessness in trying to convince her otherwise?

Why do you think there is fruitlessness in trying to convince her otherwise?

I can already understand the pointlessness in attempting to do something so ridiculous.

I can already understand the futility in attempting to do something so ridiculous.

Other Examples...