First of all, when you think of a snake you shouldn't try to attach emotions to it like a mammal. Snakes can't be "Domesticated" like mammals; they have a small brain that lacks a frontal lobe (the seat of good manors). The frontal lobe is responsible for many functions, and due to the lack of this section of the brain snakes lack the ability to perform these functions.
The frontal lobes involve the ability to recognize future consequences resulting from current actions, so negative and positive rewards will not affect their responses to certain stimulus. Snakes are more animalistic in a way, unlike mammals they don't (can't) think about the
There are two kinds of people in this world; there are those who say everything happens for a reason, and then there are those of us who understand that humans simply try to apply reason to everything that happens. People who say everything happens for a reason are simply trying hard to make some sort of justification in their own mind about bad things that happen in order to think of life as fair. They want to feel like there is a higher power of some sort (religion, politics, government, ect) that is in control and is making sure life is fair for them; trying desperately to think of a way that a bad event in their life will be equaled out i
People always say that evolution favors the runner. Hmm, that's interesting, tell that to the crocodile. When a Lion pops up out of the grass and sees a pair of Rhino amidst a group of Antelope it doesn't go after the Rhino. Don't pity the animal who can't run away, I say pity the animal that has to.