It came to the point where I would pick up any coin I found on the street, combined with change I may have had (2ps, 5ps) and would buy necessities using the self service tills to save the feeling of shame.
Oh, yes - the shame from having to pay with a big handful of coppers, because you do not have any other money whatsoever available. Made much worse by the fact that, in that position, you'll probably only have two or three items at most, so somebody always dashes behind you, expecting you to be done in no time; and then shoots you the filthiest, piercing, disgusted look when you have a load of coppers to feed into the machine - like you've done it on purpose to ruin their day.
When I've mentioned that on MN before, people have said 'just' use the Coinstar machine instead. Yes, as a punishment for being poor, I should pay an extra 8% penalty; anything to stop getting in the way of normal people with cashback credit cards. It's interesting how very often those with the least money have to pay the most money to buy things.
I've no issue with those who genuinely prefer to use the Coinstar machines - I'm guessing probably often better-off people who see loose change as discarded 'ex-money' and are pleasantly surprised that a magic machine can make it worth something again; but I think it says it all that the illustrations on the machine show a bag of 'change' that's ostensibly too tiresome to bother counting yourself including a lot of £2, £1 and 50p coins in it.