[math-fun] Irrational constants

Hi all, I don’t normally start a conversation on here basically due to my lack of formal higher math education and a very specific limited math-related skill set, however this is a question that is really just about mathematical preference rather than math itself. I'm writing with the holiday spirit in mind, posing the following question just for pure fun and hoping it won’t cause too much divisive argument ! What is the most important strictly irrational constant ? #pi or #e or sqrt(2) or maybe something else ? (Not including infinity) As a programmer I find it very hard to choose :D (Apologies to those who prefer the term software engineer)