The whole "spending money is stupid" thing
Well...you know what, some people have money to spend, and some things are worth spending money on.
For the LV bag, I'd honestly really make sure of the quality, and make sure it's something that's sure to be timeless and an investment piece. Designers have new collections all the time, and idk, it's my pet peeve not to fall into the habit of just having to have everything.
Best to buy things you know are going to last you, and you know you are going to love forever. The prices of bags also, honestly, doesn't really go up either, unless they're like super old, or they were limited edition. So, do your homework too.
For the Ayu item, it's definitely more of a collectors piece, and idk, to me, there's always going to be a demand for it because there are always new fans and collectors. You probably won't get as much functionality out of it though, as the bag. But I think it's dollar value might end up being a lot more....unless you're picking a really special LV bag.
Depends...what's really more important to you, and what you want to collect more of. Both should last a long time.