"I don't care"

“Our obligation is to give meaning to life and in doing so to overcome the passive, indifferent life”

Why is vocabulary burdened with, "meh" and "I don't care." At some point we used to stand up for something we believed in, have a conscience, when something upset us, we didn't shrug it off, we confronted it.
Now why bother? Why bother at all?:
"Psychologists have determined that otherwise normal people who are overtly aggressive and those who are extremely submissive or passive suffer from the same thing: fear. "

The passive perfer to not care, being not caring inserts no emotional attachment to anything. If one doesnt care, then he/she won't be upset, because in the beginning they didn't care. And being upset, being discontent, we fear. Even I do, I fear being hurt especially repeatedly, by the same person.

....

For thought:
“In the world there is nothing more submissive and weak than water. Yet for attacking that which is hard and strong nothing can surpass it.”