Do flies sleep? Do they have personalities? Did God take some shortcuts?

Do flies sleep? I doubt it. There was one pestering the hell out of me last night while I making supper. This was an aggressive fly that zoomed from place to place nonstop, never letting me get a bead on it with my Dead Eye Sure Shot Fly Swatter Elite. I looked like a demented badminton player in search of a miniature supersonic shuttlecock! I must say I showed great form and my footwork has really improved, but the little, annoying, swine of a fly never landed affording me the opportunity for the kill shot. You could hear it buzzing all around the room but nada! Then it got quiet. The dive bombing runs stopped. I thought maybe it crashed into the sink and drowned in dirty dishwater.
Nevertheless, the next morning I had forgotten about the annoying little bastard until I approached the coffee cooker and was treated to a near miss fly by...buzz and all. Then it struck me. That little poop eater must have called it a night and...what? Slept? All those hours of buzzing while maneuvering through high G air acrobatics had to take its toll. Top it off with the fact that since there had been no exposed food for it to throw up on it had to recharge its tiny little fly batteries somehow.

If flies sleep, do they dream? Do they get cranky if they survive an attacked by a insomniac spider?
We know they can't wake up on the wrong side of the bed or have a crick in their necks from sleeping wrong. And they have those compound eyes...but no lids. Can't close those eyes! But they say fish sleep and they don't have any eyelids. How do they know they're sleeping when the eyes are always open? They probably release little bubbles that when they break the surface and pop, a light snoring can be heard (with really good audio equipment).

These and other little oddities have me wondering if perhaps on whatever day God created flies, mosquitoes, toenail fungus, ring pattern baldness, etc. He/She was pooped or bored or had an engagement later in that moment or millennium on another world, galaxy or universe and took a few shortcuts.
We all know flies have a purpose. They help in cleaning up carrion and the like, but wasn't there a better option? With a little more time spent sussing out the problem (6 days was kind of rushing things) I'm sure something could have supplanted a maggot born, flying, poo eater, barfing its way toward procreation. Hell! I still want to know why mosquitoes were created. No one can tell me the reason for that bit of evolution! No wonder God is said to have rested on the 7th day.  If not imagine what other creepy critters with a "purpose" might have crawled up your pant leg or sleeve with mischief on its mind!

No worries. I heard one of the big box stores is having a sale on the new Dead Eye Sure Shot Elite 2 fly swatter. I am ready to get a few more notches in my belt. It's time for Fly Hard 2. The second coming! I'm calling in the SWAT Team.
I need a stiff drink...or have I had one already?