There's all sorts of reasons that this hobby is a revolving door that never stops...money is a HUGE one. A lot of people get into this seeing dollar signs, and for the overwhelming majority, it never pans out. They don't have the passion to keep the snakes, and when they realize that the mojave male and 4 normal females they bought back in 08 are not going to recoup their investment, they bail. I've seen a guy put quite an impressive collection of 40ish snakes together in a year's time, and one trip to the vet spread his finances too thin and he sold it all off.

Then there's this to consider...forums aren't for everyone, and not everyone is for forums. A LOT of people who keep/breed reptiles don't frequent forums much, if at all.