This symbol, known as the lemniscate, should not be mistaken for just a really huge, enormous number. It is, however, a reminder of a certain type of abstraction that is very hard to come to terms with.
 
I can say, "I love you. Infinity." and you get the gist. But, the notion of something with no end, ever, is really hard for us to imagine. It is the opposite of everything we humans have come to understand about the physical world. We learn, at an early age, how to justify these abstractions in our mind so that we can function as humans. We do things everyday that could possibly hurt or even kill us based on the Principle of Induction: what has worked in the past will probably work in the future. (Think airline travel.)
 
There is nothing more abstract than infinity. It has the effect of driving us further away from actual experience. Infinity, as something we try to comprehend, becomes an exercise in creating a language and symbolism that we use to describe the idea of never ending or, existence forever. And, at what point does this description take us so far away from our ability to perceive it, that we simply can't even handle thinking about it anymore?