Yes. If you do nothing and no one knows you, you will die without anyone caring for you.
People make choices, if they are good or bad, and they impact peoples lives.
It may not be much but it does.
For example, if you get raped at a young age, you may not feel safe around adults or may not want to have sex or feel comfortable with people touching you or joking about it.
If you're walking down the street, someone looks at you, instead of looking at that, say cafe, or shoe store, you've made a difference. They might've walked 3 steps extra, no matter the size of the difference, it's still a change in life.
No matter what you do in life unless you are in the middle of no where never interacting with people you make an impact. No matter how small of an impact that might be it is still an impact.
Well, no matter what.... we'll eventually die. It can be either from a car accident, a victim of a murder, or just being old that your heart gave up. Basically life is like a game of how long can you survive.