You, sir or madam or mir, are an everyday hero. (nb: s/mouth/per month/)
Thanks for the correction :-P
Also, roll your coins and take them to a bank or, better yet, donate them; don’t make tellers count all your trash coins.
if shops don't want coins then they shouldn't charge stupid prices that keep giving me lots of change. i get change, i pay with change.
and if old people being slow really bothers you that much then don't get in the queue behind them. you have to allow them to do things at their own pace. one day we'll all be old and we'll appreciate if we are not made to feel being unwelcome.
But you dumping your piggy bank onto the counter and making everyone else in line wait for you, all because you can't be bothered to roll them ...