Humans love to have choices. From early on in our childhood, we like to be able to choose what we want to do. Play with this toy or that one. Eat this food or that. And we don't like having limitations placed on our choices, especially if it involves doing something we don't want to do. Our parents try to teach us that while we are able to choose, sometimes our choices have strings attached. "You need to finish your vegetables if you want dessert." We're given the power to choose what to do: eat the veggies so we can have dessert, or choose not to eat the veggies and miss out on dessert. We might not like the options, we might wish we could choose the dessert without any other limits on our choice, but we have to deal with the reality. Depending on our maturity, we may throw a tantrum when we don't get what we want, when there is even the most minor constraint on our choices.
By the time most people are adults, they're mature enough to realize that every choice we make has some sort of consequences. They may occur prior to getting what we want, or they might follow it; they may be good consequences, or they may be bad. Then there are those who never seem to reach that maturity. They're stuck in the childish dream of wanting their choices to be free from any limitations, unable to accept that their choices may have consequences or that there may be some manner of prerequisite before they can have their choice fulfilled.
We can see this in action in the anti-vaccine movement, in particular as they fight against a bill in California (
SB277).