I actually like em. In fact, my daughter coming home at 10pm one night with her friend and asking me/wife if we were in a good mood because she brought home something alive is what got me back into the hobby after 6 years with no tanks.
It was a fight teaching her how to take care/cycle/maintain her tank and keep her Glo Zebras alive lol. Just noticed ones pregnant/Gravid and I'm checking each day for eggs, would be nice to have more for her tank and not pay $5.99 for them lol.
Edit: Noticed several Glofish threads when you do a search for the term, and a lot of people have their faq's wrong about breeding, sale, trade, etc. Here's the License:
Of note is #4 Intentional breeding and/or any sale, barter, or trade, of any offspring of GloFish® fluorescent ornamental fish is strictly prohibited.
So if they do what nature does that's fine, you just have to keep them, or give them away without receiving anything in return, best place to donate overpop to would be a local school (See #5)