I've been programming for 15 years (so I was around for the rise of OOP). There's nothing fundamentally wrong with OOP. I still write a lot of classes. But what I haven't written in a almost a decade: code with inheritance, encapsulation or polymorphism. Nothing has exploded.

Also, objects are best when used to represent actual objects (i.e. collections of data rather than collections of functions).

This is OK

    User user = new User("John");

But this:

    StringTokenizer st = new StringTokenizer(str, ",");
    while (st.hasMoreElements()) {
      System.out.println(st.nextElement());
    }

Might not be as clean as:

   stdout(tokenize(str, ",")); // functions are hypothetical