You should consider talking to a therapist about why you don’t consider non-romantic relationships to be valuable, because your take is not only not universal, but also indicative that you have some shit you need to work through.

An uncle, a child, a best friend, a parent, a teammate getting killed is not tragic

That's a unique take, to say the least.

"You killed my father, prepare to die"
- Some hero

Weirdest troll ever. But the bait was taken.

Sounds like you need to read The Count of Monte Cristo.

It is the epitome of a revenge story and it doesn't need to kill the love interest to work. In fact, it works better because his wife doesn't die but remarried the fucker who ruined his life.

Moby Dick, too. Pretty sure the whale didn't kill Ahab's wife.

What the chicken fried fuck are you talking about?

Fridging is a form of reductionist misogyny. It's not just that somebody died, it's that a woman existed only to die in a brutal fashion.

The fuck kind of fucked up bullshit are you on about? You would honestly see some one kill your parents, friends, or kids and just shrug your shoulders? There is something deeply wrong with you.

I would absolutely react more to my child getting killed than literally anyone else on the planet, what are you on about?

Though in fairness, if I had powers, I don't think it would be a pursuit of justice or launch me on some path of heroism. Somebody would just die badly (assuming the initial killing was either deliberate or through willful neglect).

I'm not gonna bother with saying that the other losses that you're discounting can be just as tragic as losing a romantic partner. Everyone else here has said it probably better than I could.

What I'll bring up is that not only are there more kinds of revenge motivation than the loss of someone close to you, there are more motivations than just revenge. For other kinds of revenge, what about wounded honour? A hunter who's prey keeps escaping them might feel the need to finally end that hunt before they can look themselves in the eye. That's its own form of revenge arc, and it can make just as powerful a story as avenging the loss of a loved one. And for non revenge motivations, there's far too many to list, but here's a start

• duty
• repaying a debt to the world
• self improvement
• survival (usually more of a side character motive compared to a hero protagonist, but still good)
• seeking admiration (from people in general or from a few important people)

The relationship with your kid should be deeper than with your partner. Nowadays, many people have far more partners during their lifetime than children - you'll never know whether your partner will still be with you in 10 years, but it's very unlikely that your child will not be yours anymore. Similar with parents.

I will say that family members who aren't love interests typically don't get enough time and characterization to make the audience care much about them.

What an awful take. I hope you aren't a parent if you expect a parent to just get over the loss of their child. You don't expect people to be motivated by loss of any loved one other than a romantic partner? Really? No other kind of love is strong enough for you? I've reached my limit of stupid for tonight.