"human construct".. Yea..
Some thoughts about thinking:
Formal logic is just a tool to make useful conclusions -- which will lead to optimization of your own utility (in the very end.. somehow).
So your understanding of logical is corrupt if it doesn't server you!
That utility-function/purpose (algorithm to determine what is useful) might be formed by someone else.
Utility is a concept that you can apply when building AI, & I find it more generic.
Utility can be mapped by a single number/variable, & it can be calculated by a single process, which have sub-processes, like: find-utility-of-object, find-utility-of-habit.
It can also be translated into evolutionary programming (utility=fitness, utility-function=fitness-function).
Thinking that utility-functions are transfered only from other entities is to exclude too much detail (from what you're saying in your blog).
Especially the knowledge of the mind/brain.
The goal of finding objective purpose is useless
You want challenge? Purpose?
You made this decision by the conclusion that we evolved into hunter-gatherers, & our purpose is therefore the specific actions of hunter-gatherers?
Or is it the need to get away from society that drives you?
Anyways: you have created your own corrupt logic to serve your (former) purpose, & now this logic/habits of thinking clearly no longer serve your happiness.
Get reconnected with yourself! Before getting anywhere...
Your theory that you will get happiness by following your own constructed logic: did it work?
Or do you have to start all over?
Be flexible & dynamic & take all factors into consideration! But be courageous & experiment!
Or you will just think & think, until it leads you further into depression / corruption.