My wife certainly notices the age of some of her belongings, most notably that of her husband.
It’s because they have the same time velocity, you don’t notice it. Like when you’re riding in a car and toss a ball up from your lap. The ball is moving at the same speed as you so you don’t even notice its speed since it travels along with you.
I have some Prana pants that I really like, but don't wear too often. Recently someone asked me where I got them and I said, "hmm maybe 5 years ago at MEC." A month later I came across a picture of me wearing those same pants on a fishing trip 16 years ago.
It doesn’t help that a lot of modern synthetic fabrics hold up really well until small wear/tear of the fabric suddenly adds up to look tattered.
Also, shopping at MEC 16 years ago was a different time.
I had a few things I though "when did this got this banged up, I just got it" but it was actually almost a decade old. Usually tools or headphones, rode my QC15 for 7 years before upgrading.