More thoughts... I haven't worked my way to answering the question yet, about aging out of a fashion forum... One has to ask if fashion is all about churn or looking like a good candidate for making babies or what.
I do think there's a lot of interesting stuff attached to fashion - history, philosophy, politics, music, tribal culture, etc. I like the entry point of fashion into the discussion in this regard. It's a pleasant segue, and we get that here on YLF - the full scoop and scope.
I'm not convinced fashion changes that fast. I don't personally see significant enough change to declare a new era, when I step back, since WWI. Although I suppose there's the issue of women in pants, which would make for a good discussion/argument. Anyways, my point is, I don't know that churn is a requirement.
My mother, who's in her 70s, pretty much dresses head to toe Lands End and only buys a few replacement items each year... Rightly, this ought to be a recipe for frumpy and dowdy, but it doesn't happen. Also fashion is a regular topic for us, so that's another thing that suggests to me the ol' wardrobe can be on a slow burn without killing the conversation.
Hmm, I suppose there's another question to be asked... If you basically want to dress like a birder every day, do you have a place on a fashion forum? I mean, REI clothes the entirety of my home town. Everyone is terminally dumpy... except they're not. Bit of a weird out, it is. But there you have it, on any naturalist-led field tour, there will always be someone with a certain flare, navy fleece and tan cargo shorts included...
Ok. The thing is, along with 'Is there a god?' and 'Why are we here?', there is that other eternal unanswerable question, 'Blast it! How does so-and-so make dumpy look so good?' No! Really!
Ok. There's a third item I realise: straight up retiring from fashion... I have to think on this and come back. But I'll note that some retire earlier than others. Some never retire... And there are interesting studies on engagement and health...