I didn't avoid questions. I said it was not normal for spiders to vibrate their heads. You seem to still want an explanation for how to decide whether it is bad or not.
Actually since the wobble is attached to the spider gene and all spiders have the wobble to some degree, it is completely normal for them to wobble.
I will say it in a easier way to think of.
1. Pretend you don't know anything about reptiles, or breeding snakes. Pretend you went to a reptile show with someone trying to convince you to like/breed snakes. When you are at the show, a spider starts vibrating his head. The breeder tells you it is a neurological disorder associated with all spiders, with different levels of the problem in different animals. Now also think of you going to another section of the vendor's table, and seeing a caramel albino. He says the same thing about them having that problem.
Then you see TONS of spiders and spider combos, with ALL of them having the problem in different amounts.
NOW think of hearing people say "it isn't
that bad, I actually think it is 'cute' and gives the animal personality".
You now know that it is NOT natural, but people breed it because either they like the pattern or want the money.
You know it affects the animal. Nobody can measure the exact amount it affects them, but it DEFINITELY isn't 'good' or AT ALL benefiting the animal.
Now, hopefully, you will be able to think of why it is not good for spider ball pythons to be bred.
Tell my ONE reason that people 'have' to own spiders, other than liking them. There are 133+ known single gene mutations, with over 1000 designer (2+ gene) morphs.
http://www.worldofballpythons.com/morphs/
Yes there are now over 1000 designer morphs out there and the spider gene is a part of almost 10% of them.
Someone who has animals only for pets would see that easier than a breeder. People I know with pets only, or breeding on extremely small scale, rarely have screwed up animals. They usually only do if it was a rescue or from previous keepers not taking care of it.
You still avoid answering my question, of why it is a 'necessary' morph.
Why is it necessary for us to own any of the different animals we keep as pets? It is actually pretty simple we do it because we LIKE them. Not a single animal that we as humans keep as PETS is necessary.
Why don't people make the smart choice and buy pinstripe, genetic banded, or another pattern reducer morph instead? All you say is 'people can make their own choices', which I obviously know. I am asking why so many make the STUPID choice to breed a screwed up animal.