Mostly because I have medically related issues with short term memory and timed memory games like that are my bane. I have almost perfect long term, though.

So yeah, the fault is with me...

...and with everyone else who flat out refuses to do it.

Which is why i leave the party in this case. I get 30 min downtime to do something else, and they get a chance to be carried through by someone else. I view it as win-win in this case.