Forgotten stuff is unused stuff gathering dust and rotting away, most likely.
The bottom line is, all it's really accomplishing is nothing, basically. If the answer is no to the above self-questioning, you should probably let go of it. You can gain instant respect by cleaning up your space. By waiting, matters only worsen. Things don't stay the same and, because they are in a constant condition of change, we'll eventually be faced with a mess if we don't deal with it.