Not judging, to each his own, I just wonder if I'm the outlier or if he is.
2 - casual brown leather (jeans, slacks, etc)
1 - nice brown leather (suits, jeans+blazer, etc)
1 - nylon (hiking pants)
I currently have 14 pairs of shoes, but about half of those really should be thrown away and I just keep around for wearing on rainy days or in the garden.
Working in Canada one summer, I recall people often asking why I had some many shoes :)
As to the rather large amount of clothes, some items are at my summer house (most Finns have a summer house to go hide in). This inflates total inventory.
I have been living for a few years in SE Asia - happy times - shorts, t-shirts and flip-flops mostly.
But here in Central Europe (Poland) where we really have 5-6 seasons (early Spring being different from Spring and early Fall from late Fall) and the amount of clothing and shoes you need is insane.
You generally need different type of shoes/pants for each season and then at least a double (nice ones and ordinary ones). So different shoes/pants/jackets/etc. for strong Winter, mild Winter, early Spring and late Spring, early Fall and late Fall, hot Summer and rainy Summer etc. It accumulates even of you are not wearing all in one year.
When I started to shave around age 17, I got one of these Gillette 5-blade razors, and it came with two replacement heads in the same box. When those were worn out, I bought a 10-pack of replacement heads. I'm now 31 years old and I'm now halfway through that same 10-pack.