Saw a story about a wedding ring where instead of a diamond the ring was jeweled with the couple's birth stones fit together into the shape of a heart, which honestly I think is WAY better and probably WAY cheaper too.
There's some religious history to them, but in general these days people are talking about the list of stones that American jewelers came up with in the early 20th century to try to sell more shit.
Moissanite is chemically different to diamond (SiC vs C), has a different crystal structure, and is less hard. You can also get actual lab-grown diamond, but they are quite expensive. But you probabaly won't be able to tell the difference anyway.
But also, who cares that it's less hard? I'm not using it for a drill bit, it's a cosmetic piece. Literally it's only function is visual. And moissanite is superior. All the visual markers that are used for beauty in a diamond it surpasses. And some quick googling I did to confirm that also showed me that diamond is only barely harder ("With a hardness of 9.25, moissanite is the second-hardest material used a gemstone." a diamond is a 10.) and it turns out, less likely to break in some cases. "Moissanite doesn't have a cleavage plane, while diamond does. (This is an internal plane along which a diamond crystal can easily split)" So if you hit a diamond in the wrong spot, it can still crack. Moissanite does not have a weak spot.
Everything can be pointless when it comes down to it. I never ever wore jewelry but when I got married we got really nice matching plain bands and now I never take it off and quite like how it looks, it's not pointless to me.