Building an airline can get addictive! Sometimes I just give up as it's sucking up all my time.
How about a voluntary lock-out feature? E.g an option to lock yourself out of the game for a user-defined period of real time?
Often, having done some work on the game, there's not much to do for a few hours. But I get sucked back in to tweak some things.
Having an option for a player to lock themselves out for that few hours, so they cannot log in after deciding that themselves, would let us get on with real life. And manage the fun of this game. Rather than get so addicted I have to give it all up and not play at all.
C