It depends.
My father used to do all of his deer, then later what my brother got. By the time I was starting he was lucky to get the first 2 days of the season off so they all started going to the processor. When you'd come down with 3 deer and it cost $150 total for good work and packaging it was worth it.
Now the last few years, since he retired and I have a little more time off myself, we usually take care of everything ourselves. He does the skinning and heavy butchering and I do the final cutting, we all do the packaging.
But if it's been a busyand no spare time to be had,and a early season/warm weather kill, then we still take it to the processor so it's done fast and there is no worry about spoilage.

(to be noted, that is myself and my father doing everything. my older brother isn't lazy, he is forgetful and .... preoccupied to the point of being lost most of the time. The type of person to show up 2 days late to his own funeral because he forgot when to be there, and then got side tracked on his way )