Aaron's concentration was on those hidden or special attributes, and for that reason, he started to hoard the FSPs. He once believed that those FSPs are useful when they were turned into attributes, not sitting as a big number on the status panel.
That opinion changed as he started to learn and as he started to get more FSPs that he couldn't possibly just dump into the good old attributes.
There are a few reasons behind this.
First and foremost of all, he learned that there are skills that can lock one's attributes, reducing them to a bare fraction of what they had. So, no matter how high your attributes are, you would be rendered useless. It was not just skills; there are artifacts and formations that do the same.
If he gets caught in such traps, no matter how high his attributes are, they would become useless.
Second, well, it was like a continuation of the first, but instead of suppression, there would be a difference between them.
