The nice thing about Common Lisp is, you have the choice, which style of programming you use. There is a lot of good things to be said about functional programm

The nice thing about Common Lisp is, you have the choice, which style of programming you use. There is a lot of good things to be said about functional programming, but for a lot of problems, OOP is the natural pattern. And with Common Lisp, you can use both in the same program, depending on which pattern fits the best for that part of the program. Mind you, I am not using OOP in that sense it has degenerated to in the Java universe. It is actually less the language itself but the culture of trying to express too much in object hierarchies and protocols. I try to keep my object models simple, avoiding too much inheritance and complex class hierarchies. But it is a wonderful method of decoupling routines from heterogeneous data, which is well expressed as object with their methods implementing the common behavior.