[astrange]

There are downsides to using the most powerful option at all times.

https://en.wikipedia.org/wiki/Rule_of_least_power

Also, Lisp is the most powerful at constructing programs but that means it's the least powerful in the field of making sure your program actually does what you wanted it to - that's what types, borrow checking, proof assistants and so on are for.

(Some people think Lisp is declarative because it's homoiconic but that's not true - you can't find out what a Lisp macro does without executing it.)