Hey Matt and Dad,
well, a colony needs constant "resupply" of workers to continue, otherwise one by one they will die. Their Job is to tend the brood of the queen and collect food, and without either the individual ants will just fade away after sitting around without anything to do.
So its rather pointless. Also, adoption is not an option, so having a queen is the only way to enjoy this hobby.
How about you (Dad) see it as a chance? Youd be suprised how many parents ive met that spend more time observing the colony then their kids, although they didnt like the idea at all in the first place

(including my own father, who now owns his own colony!)
Greetings,
Necturus