"They'll be worth something someday"

I spent some $2 bills, dollar coins and 2005 buffalo nickels at a White
Castle in New York yesterday. This caused quite a stir and competition
among the workers to buy up these denominations.
One worker said he was buying the $2 bills because "they'll be worth
something someday". I've heard this before and wonder why people think
this about coins or bills that clearly will never be worth more than
face value.
It has been disproven time and time again, but people still think it.
Everything from bicentennial quarters to $2 bills to half dollars to
state quarters to dollar coins NEVER EVER are worth more than face
value, yet there's this allure or myth of "worth something someday"
that is apparently irresistable.


Well, consider a stock held the past 40 years. If all it did was keep up
with inflation but without any tax due then it has not made a millionaire
but yet it is a very impressive chunk of value...Along those lines you need
$10,000 worth of the targeted collectable not just a few items.

Actually, I think $2 bills in uncirculated condition are very sharp. Also
look for exponents of Mersenne primes as serial numbers of uncirculated $2
bills !

Also, I think modern coins need an edge such as the proof versions or
versions mint packaged as uncirculated or first day strike versions...