Yay or nay

What's the big deal with people looking down on someone, who wears 2nd hand clothing.
I know thrifting is somewhat cool now days, but it's still got some stigma, the people that are into thrifting and people that are into name brands, designer, Instagram world are too seperate people and when they meet the person with more money looks down on others.

I personally don't care, I love charity shops, they clothed me for almost all my childhood, and most of my adulthood, it's just clothes🤷‍♀️what's important is the quality of those clothes, it's environment friendly to ♻️ it's cost efficient too♻️💰 had people look down on me because I buy 2nd hand shoes aswell, I don't care, at least I live within my means, besides my personal style is easily found in these stores🤷‍♀️
Are you into thrifting, if not why? If yes what's something you wouldn't buy from thrifts?