It's a hobby which has had a sharp decline. I know a guy who sells old postcards and various stuff, he told me people try to sell him stamp collections they've

It's a hobby which has had a sharp decline. I know a guy who sells old postcards and various stuff, he told me people try to sell him stamp collections they've inherited, and he won't take them - even for free - simply because he can't find buyers for them. Unlike the postcards. Of course that's great for everyone who collects them without expectation of profit.