If you stopped your grandparents from meeting, do you think

I'd be my own grandpa

I was a secret adoption. My adopted parents are on my Birth Certificate. I'd still exist because I'm clueless who I'm looking for and fine with it.

Interesting question. Maybe we’d find other families to be born into.

You wouldn't exist

given they'd be big parts of my physical chemistry, not to mention the experience for life, I'd have to say that me, as I am now, wouldn't exist.

Idk i wonder about my parents sometimes..

Well if I was alive back then, chances are I would be dead right now.
So no probably not.

I'm 1/4 each grandparent, so they'd have gotten some other grandkid and I wouldn't exist

I wouldn't exist.

Id just have different grandparents

I’d just like to learn some family history about previous generations. If my father inherited something from one of his grandparents or whatever. It would make it easier to understand why he was the way he was if there was a genetic component.

No idea, never saw either and my grandfather died of a blood clot around 1934.

He didn't even see the beginning of WWII or how his father was shot

Grandmother survived yet behind the iron curtain.

A puzzling question: if I were able to stop them from meeting, wouldn’t I already exist ? 🤔

So here's the thing. Time travel as it's been shown in popular fiction isn't possible. That's not to say time travel itself isn't possible, but the whole grandparents paradox wouldn't be a thing, and here's why.

When you travel back to a moment in time, you're not actually in your own past. What you've done is created a parallel universe where that moment is occurring right now. What this means for the casual time traveler is that you can fuсk with anything you want. You can unalive historic figures, save historic figures, be the one to personally put Hitler in the ground, but if you manage to make it back to your current time, nothing will have changed. And so in the end, the only use for time travel is to see how things actually were back in the day.

TL;DR: Nothing would happen to you.