For myself, I will probably never own an animal with the spider gene present. I do appreciate the beauty of some of the morphs, such as a lesser bee, but the wobble simply bothers me. I won't speak for the snake. How can I? A snake has never spoken to me so how would I know what it is experiencing? How can I know if it is in pain or distressed by it's condition? We humans, in our arrogance, have a tendency towards anthropomorphism.
I will not knowingly propagate an animal with a known defect. There are simply too many other combos I can produce that are issue free. I do not know the history of the spider gene however, I do often wonder to myself. If a human hadn't intervened, capturing and breeding the first specimen carrying the defect, would it have survived to the age of sexual maturity or would nature have eliminated it through natural selection?
All this being said I would not dare tell you how you should feel or what you should decide. That is up to you and you alone.