Those are all fair points (and why I've never quite been able to pull the trigger on a Le Creuset). I think the happy medium for me would be trying to hit up one of the two big sales they do at their factory store in France every year and buying one there (although I'd buy something other than a Dutch oven, because why double up?), but beyond that, you're totally right- if the current Dutch oven is working, there's really no need to buy another.

My current pots and pans are an Emeril Lagasse-branded set that I got on a recommendation from Reddit (maybe here), I think, and honestly, they're great, even though they weren't terribly expensive and aren't All Clad or whatever. I've had them about seven years, they heat evenly, do the job, and the worst thing I can say is that one of the glass lids shattered when my wife dropped it a couple of years ago. We'll keep on using them until they're no longer usable, but I expect that'll be a good, long time.