Last I checked, this is a forum dedicated to COIN ROLL HUNTING - so in that regard, given that we are COIN ROLL HUNTERS, why would anyone advocate for getting rid of the nickel. Plenty of people here (myself included) search through nickels. Are we trying to kill our own hobby ourselves (shoot ourselves in the foot)? Isn't it enough that electronic payments, COVID, etc. have already threatened what we all enjoy doing.
I don't care what it costs to make - frankly, I (as well as anyone else here who CRH nickels) profit from them being around, as we look for buffaloes, war nickels, and key dates. Not being able to do that anymore would be a big bummer.
They can just make them out of cheaper materials or they can melt old worn ones down to make new ones so the cost of metal would be only the incremental amount produced. Given that there is less need for cash overall, they probably don't even need to produce significantly more than they can probably remove from circulation (i.e., the total amount of nickels in overall circulation probably doesn't need to increase much, if at all).
just my 2 cents (or 5 cents in this case)