I process my own steers. Since I have been using the same bull on all the cows, the bull is the same. The cow to use is the selection. I have my "choice" cows, based on experience, but some years they have heifers and I resort to a different cow. Since several of my friends, family and peers also get in on this, we often butcher several. If one works out really well, I remember which ones those are. If we get a bad steer, I don't use that cow again.
I am looking for steers that will finish well, all about the same age etc. When I make a run to the processor, I want to do it all in one shot. Hence, I don't want some ready and some not. I also want really good steak.
The "reason" I process my own is because I can't buy it anywhere (that I know of) that is as good as what I produce. I can buy a good cut of meat at the shops on occasions, but it is expensive. I don't know what went in to the animal. When I process my own, the whole thing is good.
I figure it costs me about $3 a pound. The animal I use has a net value and if I process him versus selling him, that is income out of the operation. So I don't figure him as "free". Then I add the feed bill and processing fees. It comes up about $3 a pound. You cannot buy the quality steaks I get anywhere for that price. You can get the hamburger for that, but not the premium roasts and steaks.