Yeah, I went to work for a law firm when I was 22, and I bought myself a 3/4 length cashmere-wool overcoat, and it was $750, and my parents thought it was ridiculous to spend that.
I'm 48 and not only do I still have it, it still looks like new, with no real care taken of it - wear it, put it away. The only issue I had was the liner in one arm pit started to unstitch a couple of inches, and a tailor took care of it in 20 minutes for $10 a decade ago.
You are definitely using it well. Not all people are such good carers of their stuff. My friend and I both both 200 Euro coat. Mine got worn out in 4 years, his is still going strong 10 years now. Same with other stuff. I just use my stuff very roughly. No point buying expensive stuff then