As long as I have a few gold coins I'll be fine. I've heard for years that this hobby was gonna die but it's still here. The US Mint is selling coins like hot cakes, the hobby is as strong as ever!
If it does I will buy a lot of coins for cheap then wait for it to pick back up and sell them all then retire. Let the downward trend begin! Lol
I don’t think that you would find the margins would allow retirement. Making some bucks, maybe. I suspect a lot of us have had the same thought.
The collecting of MS70 coins in slabs may get hurt, but look how dedicated the collectors of Ancients and early American coins are. There may be pockets that lose collectors, but many evolve into collecting other things. Morgan dollars have gotten very expensive in high grades, so many collectors have started collecting VAM varieties, and are looking at coins more closely, and learning about how coins are made. This hobby will not die. It may change, but not die.
The question is, will people pay 100x more for the same coin just because the year is different. For me if i see two morgan dollars, same MS65 and eye appeal. But one year costs 100x more that the other, I will go for the normal common date and let someone with money burning a hole in thier pockets spend the extra money. I think the hobby will change, not sure if those high prices for key date coins will stay.
I think people paying very high prices for MS70 or high grade Morgans will be dissapointed in the future. There are a lot of High grade Morgans but the next succeding generations in the US will be doing worse that the earlier ones starting with Millenials and down. So the market for very expensive common coins will shrink over the decades. Now to answer the OP. Most will be melted for the metals content to pay bills. By 2050 I read University degrees will average half a million dollars. Them old coins will get melted down quick for raw metal.
By 2050, the idea of a liberal arts degree will be ancient history for most. More and more people will be taking specific studies aimed at entering specific professions. The traditional universities already have priced themselves out of the market, supported by an avalanche of student loans, most of which will never be repaid. The next cyclical recession will take out those loan programs. A lot of colleges and universities, especially private ones, will close their doors.
What will happen is that I will be able to afford early U.S. coins that I think are pretty sweet, like early cents (Chain Cent!) and Gobrecht Dollars! I don't care what they're "worth," I'd just like a collection of some sort that includes these coins.
I got my knuckles thrashed (on good order. I was out of line). All will be alive and well. The hobby ain't gonna die. We're evidence of that here in these forums........
If the hobby ever dies then PCGS and NGC will go out of business forcing all the graders and slabbers to find honest work.