The whole thing is pretty ridiculous. You don't get to consent to being born. You don't get to consent to having who you have as parents. And, legally they get to make every important decision about your life for 18 years.

Even if you have parents who actually loved you and showed it, who aren't abusive, who did the best they could, you're still stuck in a relationship you didn't get a chance to consent to. Even "good" parents often mess up their kids by trying to live their lives through those kids. Like, parents who are failed athletes trying to push their kids into sports. Or, parents who miss having little kids around trying to guilt their kids into providing them grandkids.

And then there's the whole expectation of taking care of the parents when they get old and sick. Yes, I get it, they changed their kids' diapers when they were young. The kids are just returning the favour. But, those kids never had a choice. The parents (for the most part) chose to have kids, and chose to do that work. The kids never agreed to the terms and conditions that said they had to help out their parents when their bodies started failing.

Suicide is selfish, but ultimately, it is your life. It's unfair that other people get an opportunity to tie all kinds of strings to you before your brain has even developed enough to understand the concepts of life and death.

Then again, we're just animals. We only exist because a machine which exists to propagate its genes turned out to be effective at propagating its genes. Nature is brutal, and even if we don't always admit it, we're still part of nature. There's nothing fair about it. It just is.