The most reinvented concept on the planet

It's hard to imagine a more reproduced concept than the wheel.

A few examples:

In each case, it is obvious that "reinventing the wheel" was the right design decision; "reinventing the wheel" is a necessary part of good and purposeful design.

Different problems ...

... are not the same. If they were the same, they wouldn't be different.

Think for yourself

Fear of "reinventing the wheel" is a first step toward bad design. It leads to:

Should I really?

Quite possibly; it's often the most responsible thing to do.