I tend to mix OOP and functional together as I use objects as a way to relate functionality or steps within the process. I almost never use objects as a means to model the actual data. At most, I use objects in this instance as glorified structs. The only real benefit that OOP as implemented in most languages has is the ability to write to an interface whether you use an explicit interface type or an abstract class which concrete implementations derive from. Like Bob C Martin said in many lectures the inversion of control is really where OOP shines. Anything else most other paradigms do it better.