It would be interesting to pull up the idea of human nature when trying to analyze a certain and uncertain scenario. If you are certain that life is enjoyable in the now, then why does one then head for the uncertain? Often times humans, at least, might gamble for something greater because the now does not satisfy their greed, posing an interesting statement towards some aspects of religion.

Interesting to discuss the idea that art can be a median for which we can take away a story rather than simply appreciating a work at face value. As well as the idea that overthinking or overanalyzing a work is not a bad thing, but rather good that you can reflect and take meaning from something meaningless.

For me I read this (maybe not as the main point but I still found it relevant) about the power of both literature and knowledge and how we can only debate who we are as individuals and who others are in society after gaining knowledge and immersing oneself in a different world to acquire a better sense of who you, yourself, is as a person.

Through my reading of the poem this flea is a representative of any potential children between these two individuals. That two bloods mix to make one is an analogy to the shared genetics of both parents that a child would inherit. Also, mentioning that there are "three lives in one flea spare" is representative of the idea that a humans legacy is represented by their children, and that children will carry on the image of their parents throughout their life.