Cyrille Martraire

Reuse is often assumed to mean code reuse, but there are many other kinds of reuse. You can also reuse ideas, and even reuse the process of applying ideas.
Why reuse?
We want to reuse prior work or knowledge for several reasons:

It is easier to reuse than to redo the effort that would lead to the same [...]

This anti-pattern is about Using String instances all the time instead of more powerful objects. This is a special case of primitive obsession.
Examples
Here are some flavours of this anti-pattern:

String as keys in a Map: I have seen calls to toString() on objects just to use their String representation as a key in a Map: [...]

Small details matter because you deal with them often. Any enhancement you make thus yields a benefit often, hence a bigger overall benefit. In other words: invest small care, get big return. This is an irresistible proposal!
Examples of small design-level details that I care about because I have experienced great payback from them:

Using Value Objects [...]