Strong disagree. It's a different kind of hard. People can handle hard. Running a marathon is hard but a million do so every year for no reason other than maybe it's hard.
The difference between taking care of kids and having a family is that it's meaningful and to most deeply satisfying. Sure there are some people that don't get any satisfaction, but I think it's fair to say that it's not the typical experience across every Western culture.
Let's stop pretending everything is morally equivalent. "I'm raising an autistic child to be a functional member of society", "oh that's nothing! I just mad Diamond II with 61% win rate over 200 games in League!"
I don't know what "being with the wrong person" means. There is no "right" or "wrong" person as the world doesn't revolve around you. If you're actually in an abusive relationship, you should get out obviously. But what's the alternative? Drifting. Emptiness. No purpose or companionship. Spending the rest of your lives with pets asking for life hacks on how to manage boredom. Video games, netflix, personal indulgence and self gratification, medication.
This is going to be weirdly controversial on this forum but is advice I would give to my children: most people should aim to do what we've been biologically evolved to do, namely find companionship and love w/ someone and raise a family. If you're an outlier and you have a shot of sending someone to Mars, sure, go all in on that, but for nearly everyone else, this is your best chance for a fulfilling meaningful life.