Okay mr. intense. Like I'm sure somebody would really be concerned to lose 20 pence
No, it did not bother me, but its also not something Im willing to do or on a regular basis. Its like I particularly care for some anonymous entity that I will never see again and I have never seen before. Maybe if you contribute here next year someone will give you a few dollar worth of coins.
Consider the real world equivalent. Someone you dont know asks for 20$ and they promise to return it to you X days later just show up at the same place and at the same time again. Would you do it?