This was in my post to “unknown” but that’s the thing… if you haven’t worked out your core issues around 'being big enough" as it gets bigger you will still percieve it as being too small.
One of the main/top “gurus” of the PE industry became a “guru” because he simply could not stop trying to grow it as it becomes a type of body dysmorphia like bulemics or anorexics.
You “say” you’re going to be satisfied at so-and-so inches and then, just like @SammyG said about “attractiveness”, you suddenly just want to be an extra 1/4" thicker or longer or whatever and the cycle keeps repeating.
Check out the PE forums and see that attitude in most of the posts…