Why did you decide to go with Bash instead of another scripting language like Python or Ruby? Portability? "Just because"?

I am not bashing Bash ;) but genuinously interested in the motivations as a programmer. You have stated that the Bash shortcomings are "interesting", so I guess it boils down to some kind of "who cares, let's do it with Bash".

I tried nb yesterday and damn if it had a native capture tool for macOS and iOS this would be the perfect Evernote replacement for me.