Compost Bin Ants ~ Good or Bad?

[Texas Blues]

Hey y'all. I have an open compost pile in the corner of my backyard, mostly grass clippings, leaves and twigs etc. For my kitchen throwaways like egg shells, orange peels, coffee grounds et.al., I drilled holes in a 55 gal. wheeled trash bin and started using that. I cleaned my well over due rain gutters and got a good amount of fresh composting material to start it and with the addition of the kitchen refuse and occasional dry material it really is churning out some nice stuff for later use.

A couple weeks ago I went to turn the material over and noticed under the bin a nice little fire ant clubhouse where they hang out and sharpen their knives. I moved the bin a few feet away and a couple days later the spot where the ants had been now appeared lifeless and abandoned.

Yesterday when I went to toss my kitchen refuse and opened the lid I got a nice jolt. In the space of only a few seconds about 20 or so fire ants quickly began chomping on my flippy floppied feet. Upon further inspection, the ants have once again set up shop not only under the bin but inside amongst the compost as well.

So my question is this good or bad? Do they, like other ants, farm aphids and if so will the ants and aphids left to their own evil devices, contaminate my compost when I use it later? Temps are cooling down now so I don't heat from the compost itself killing them. If I use it in my raised beds could I be seeding them with the evil spawn of aphids? Or do the ants also have a beneficial use, such as aerating the compost?

My first instinct is to kill 'em all and let God sort it out but...

What say y'all?

I'd be much obliged for any advice.