There are lots or reasons to hold a dispersal
1. Business partnership dissolves, legaly all cattle must be sold to disperse funds equally to partners
2. Death or health issues of owner, and family does not want to deal with the cattle
3. Old age, at some point it becomes harder to manage cattle, especialy in your 90's, and need to use help, which reliable help is HARD to find, and the old addage "If you want it done right do it yourself", applies and sometimes that just is not possible any more
4. Retirement, what this is I am not sure, not mentioned in the Bible so I don't ever plan on it, I love my cows and they will send me out feet first when I quit
Dispersal sales are a great place to pick up good genetics at reasonable prices, semen, equipment, cattle, embyos etc. etc.
Usually there is a lot of semen in storage, and it sells at 20-50% DISCOUNTED COST COMPARED TO RECENT MARKET pRICE