The same arguments could be applied to almost any field of research. If you get to spend your time doing something that gives you pleasure and challenges you, t

The same arguments could be applied to almost any field of research. If you get to spend your time doing something that gives you pleasure and challenges you, then it's worth that time. If it results in something that is also of use to others, all the better. There are countless examples in history of how people have worked on something, often despite lack of understanding or even rejection by others, and that very work later became very relevant, often many decades later. You could have spent the same amount of time watching TV instead of writing a programming language. Wouldn't you have found that an "utter waste of time" as well?