Lisp could have been huge
Lisp is the first programming language I learned. That’s why I liked programming since the beginning. Unlike some of my friends, my learning path looked downhill, at least at the beginning. In Lisp you are “free”. Its syntax is easy to grasp. You can write your own interpreter if you like. Functions as first class citizens are now a given in many programming language. In Lisp they were there since the beginning.