One of the people I know who used to game apropos nothing asked me about my fantasy game yesterday. I told him what happened last session.
He said something to the effect of "You need a good total party wipe every so often. It gets boring playing the same characters all the time."
So I should either be surprised it took 18 sessions, or surprised that it only took 18 sessions, to do something ridiculously risky. I'm not really sure which.
Maybe I should recruit him into the group.