I am very happy that comic book thing has became the cult for a time being. When the first Overstreet Comic Book Price Guide was introduced in 1970, it has been grown steady ever since. I don't know how long it will last. It depends on the generations.
My son will turn 18 next month. He has a zero interest in my comic book collection. My 16 years old daughter has a little interest in mine. However they love manga books. Right now, we face outrageous inflation. I don't know how the comic book stores will survive through the hard time.
I am now 60 and will try for five more years then I can let them go for gaining some money for my retirement. Just wait and see. So far, selling of Golden/Silver/Bronze comic books are pretty good.