Composting question

Composting question

I have a plastic composting bin that I've been filling over the past year. It's been host to many and varied creatures; woodlice, slugs, worms and now, recently, ants. I don't mind the ants at all - in fact I feel a little guilty every time I slug another bag of kitchen waste into the bin and disturb their nest! I've noticed though they seem to be speeding up the composting process - their nest is made of lovely fine, black, crumbly compost where previously there was just half-rotten vegetable peelings. My question is; is this a good thing, or are the ants removing vital nutrients from my compost? I guess there's not a lot I can do about them either way, but I'm kind of curious as to whether ants in my compost is a good or a bad thing! TIA!
My dorm room/apartment

My dorm room/apartment

Picked our first cukes today!

Picked our first cukes today!

SW Ohio, my tulips are blooming!

SW Ohio, my tulips are blooming!

My Shoe Box

My Shoe Box

Blooming!

Blooming!

Martha Gonzales rose, FTW.

Martha Gonzales rose, FTW.