Tragically true.

Honestly, nothing would change

To answer the first question, I feel as though nothing would change. Every word that flies out of my mouth just flies over people's heads. I don't have that kind of impact, at least in my family.

To the second question, **** love. And the second part, IDK but I'd be hella mad even if I wasn't born.

They would be fine. Humans are much better at adjusting than we think. Death is something that is very hard, but we eventually can move on.
A "first love" and "BFF" are things that are honestly not that important the end of one's life. Actual BFFs are rare, and a first love isn't necessarily the one that you fall in love with forever.
I don't mean to be pessimistic.

Somebody else. *shrug*

My mother wouldnt have married my dad, instead she would have finished her career, travelled around the world and probably found a good partner to spend her life with.
I basically ruined her life. If I could go back in time and stop her for conceiving me I would tbh.

I don't think much would change, honestly.