We all know that `this` refers to the actual instance of a class...but it seems to me that most people are not using it. So, should I be using it?

My thoughts about it are as follows: Since `this` refers to the actual instance of a class, it should be used to access any member of that class.

```
  public void(String newValue) {
        this.privateVariable = newValue;
  }

```

This should guarantee that the value is not assigned to an object with the same name within the scope (which could also end up as undefined behavior, anyway). But, what if an underscore is used to separate private from non-private fields:

```
  public voud(String newValue) {
        _privateVariable = newValue;
  }

```

`this` seems in that case a little redundant and unnecessary.

So, are there good reasons to use or not use `this`? Or am I just racking my brain about nothing?