On the other hand, maggots are more useful than baby mice, the little freeloaders.
Yeah, that was probably on the OPs mind, too.
Insects stick better than mammals:
Good thing too.
In German it is the mouse who provervially hears secrets, so if you would like to be in a secret place to hear what’s said there you often say: “Da wäre ich gerne Mäuschen (gewesen)”, that is: I would have liked to play the little mouse there.
So now we have to take the nationallity of the mice and flies into account.
Concerning the OP: I’d go with the mouse over the fly anytime. Mice are nice (it rhymes, so it must be true).
Definitely the fly, for abandoning an earlier partner…as the song lyric goes:
Fiddle-de-dee, Fiddle-de-dee
The Fly has married the Bumble Bee
Says the fly, says he
“Will you marry me?
And live with me, sweet Bumble Bee?”
Fiddle-de-dee, Fiddle-de-dee
The Fly has married the Bumble Bee
The “flies and the bees” doesn’t have the same ring, though.
ORLY? Try to feed a snek a maggot, see how far that takes you. Pinkies FTW!
Lucky! One of my sneks will only eat quail, the silly spoiled thing. The rest eat small rats or giant mice depending upon mood.
But all my lizards loved hornworms. Hornworms are at least a bit cute.
I used to work in a pet shop and one of my jobs was feeding crickets to the anoles and my goodness, that was fun! Those little dudes are FAST!
Giant anoles = tons of fun.
Tiny anoles = super cute, but guilt-making, as they are commonly feeder lizards. 
Back to the OP - another reason it would be bad for me to marry a mouse, the ghosts of countless rodents inhabit my house and my spouse-mouse would be possessed and murder me!
Yeah, my rodent karma is not great, I trap rats and feed them to the crows and I have a cat and a dog who are both pretty great at dispatching small squeaky cromchy things. I’m probably in the Rodent Pantheon of Evil somewhere. Oops.
I used to raise praying mantises. I wouldn’t describe them as “cute”, but they’re better than mice.
They look like alien predators, are you kidding? Gives me the creeps.
Flies are way worse, there is nothing redeeming about them. I always trap them under cups and put in alcohol wipes to fumigate/gas-chamber them.
Mice, at least, are cute.
Well, I’ve used a mouse during a lot of my sexual fantasies …
Watch the movie The Fly (the remake with Jeff Goldblum) and you won’t need to ask.
