We've done our own for years, decades I guess. Started with boning them all out ourselves and taking the trim to be processed elsewhere. Now we grind, season, stuff, smoke all our own, or any combination of that. Never really trusted the local butchers with the animals, and the signs on the door "we guarantee you get your own meat back", hum? or what? I know for a fact that they don't clean the grinder between animals. I've been past the locker plant when there are 75 deer stacked up like chord wood, can't tell me that the guy making minimum wage for a few weeks is taking any amount of care in what goes in the grinder or not.
Yes, takes some time, but once you have a few under you belt it does go quicker. My brother and i have a system for deer, we each have our part to do. We skin, he starts on front quarters, I take out tender loins and loins, clean, cut and vacuum pack. Then I debone the hind quarters while the beast is upside down, split them into the perspective 6 muscle groups, cut steaks or cubes and vacuum pack. By the time that's done all that is left in the neck meat and we double team that into the trim bag and done. Trim gets divided into either 5lb (jerky), or 17lb (smoking) batches and froze for a later date. We did 3 deer from opening day WI couple days ago. Start of process to finished and cleaned up in 7 hours. And we are picky, spend a fair amount of time taking out silver skin etc.
We even did a Bison a few years ago, hung it from a loader to debone it and hauled it home in a freezer. Took about 6 hours the next day to get it processed.