It's very interesting to see this philosophy espoused by many already in the business. So the obvious question is, "why are they in it then?" Because they want to have no income and be paupers?
Most of these people you are referring to aren't really "in the business". Most hobbyists (including many of those who you see with fancy web sites, etc., have other sources of income (other jobs, spouses income, etc.).
Think about what is involved. Say you are breeding a new morph of snake that is fairly prolific.
You have pay to feed and house them and then you have to consider "paying yourself". What is your time worth? Do you work for minimum wage? Multiply that $5.?? times the number of hours per week you spend feeding/cleaning cages the number of hours you spend answering phone calls/emails setting up/maintaining your web pages hours travelling and sitting at to expos. Then there is the $100-150 per table price of selling anything at the expo and the hotel rooms, meals, etc. If you don't work for minimum wage, then you have to increase to "cost" of keeping the animals.
It isn't that you can't make the hobby pay for itself, but most people who try to breed animals "for a living" end up having to suppliment their income by other means.
There are two ways to make money in the hobby. Either produce huge numbers of offspring to sell or produce fewer expensive offspring. If you plan on taking the first route, you have to produce a bunch of cheap snakes. If you go a good expo, you might be lucky to sell 100. If you sell 100 corns at $15 each you take home $1500 of which you spent $250 paying for the lodging/food/table at the expo plus the countless hours you spent raising the adults, the food, the housing etc. You end up with very little profit if you do the math.
If you go the expensive route, you have to find people to buy your $5000 babies. How many of those do you think you can sell in a year? Then the next year?
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Chris Harrison