Behind every realist/idealist, lies a romantic that believes so firmly in their ideals* that whenever they are crushed (and they knew they were going to anyway) something decompresses inside of them. Two opposite poles.. and that is probably the worst analogy to use but one can picture it like this: a system where two engines are moving in opposite directions at a random regular rhythm. Whenever there is an acceleration in one of them they will feel either optimistic or full of disbelief.
But when both poles accelerate at the same time, there is an inevitable convulsion and they crash and everything collapses. the whole system stops and they feel neither optimistic or pessimistic. They just feel nothing at all. Absolute void. They experience (as a simile to what happens in the universe), the expansion of time and space, inside of them. And of course, in their most inner core there is nothing but a black hole.