Employers and romantic partners can be especially put off if they can't find any trace of you online. And if they really care, they'll dig harder to find that time where you declared bankruptcy, or you got arrested for public intoxication, or where someone deep in your past said something negative about you, and that's all that will stick in your mind when they think of you.
For me personally, having a simple, but relatively barren social media presence is worth it to avoid the persistent diggers, who will find something about you if they don't see anything public.
And besides, everything about most of us is already stored in Apple or Google's datacenters. There's no hiding from the deeply intrusive data collection those companies do. So having some simple information out in the open is likely better for privacy in some ways.
If you disagree with my take, that's fine, I just wanted to give another perspective.
I have thought that way before.
But nowadays I have a different perspective. I've got everything I need to be happy, and that's enough for me.
You're not going to be obsessing over all your career achievements on your deathbed, you're just going to wish you had spent more time with loved ones.