In truth, Exciting Simulations is clearly at fault here. You have made the crack, got us hooked, then teased us with even better crack and look what happens. The addicts go a little bats*** and lose all self control.
I, however, am able to control my urges and can quit this sim anytime I want to. In fact, 5 more missions and I'm done. 3 times through the list is enough for me. Of course, STS-1 is always fun so a 4th go around wouldn't be so bad. ISS construction is awesome too....so maybe......
mmmmmmmmm.....crack.