You're taking it too seriously.
My future Son In Law asked me out of respect and for a bit of a joke, he would be marrying her anyway no matter what I said because they'd been living together for 3 years.
Like I said earlier, Fathers used to pay for all the wedding and that's why they were asked, I don't think it happens anymore.
Where's the respect in asking someone for permission to do something you're going to do anyway regardless of what they say? You're just emphasising that they're irrelevant, which is hardly respectful.
I think that respect would be shown by making your spouse's parents the 2nd and 3rd people you inform (after your spouse, obviously) and asking for their approval because it matters to you, not by asking their permission when it doesn't matter to you. I also think it should be done by both spouses with both sets of parents, equally. Maybe even at the same time, so nobody was first just in case that might bother someone.
not caring for one tradition doesn't mean you don't care for all...
Do you not care about the tradition whereby the local feudal Lord gets a go on the bride first on the wedding night for example?
No, because that tradition never existed. Not in England, anyway. I'm not certain about everywhere in the world, but it definitely didn't happen in England. It wasn't tradition. It wasn't even legal. While I've no doubt some lords got away with raping peasants, it was very illegal and the penalty was death.
The only even vaguely related law and custom that did exist in England was that a serf might have to pay their manor lord a fee for permission to marry someone from a different manor.
Wasn't this the plot of Braveheart pretty much?
And like the rest of that film, it's a lie serving the purpose of propaganda to promote irrational prejudice.
The liars who made that film didn't even bother getting the year right...and that didn't matter because the truth had nothing to do with that film. They even pretended that a 7 year old girl in France was a woman in England and got away with that too. The truth is just an inconvenience to be ignored when making propaganda.