memory work

Should I worry because I just got demolished by a 5 year old and a 7 year old in a game of Memory? The kids chuckled as I repeatedly picked the same two cards on 3 consecutive turns. accidentally. I simply could not remember where cards were. In fact, after awhile, they all started to look the same. Pizza, hotdogs, dollies, butterflies......If this keeps up, I will not remember the kids' names or my address in approximately a week.