Thermodynamics, laws and life

while most will agree that people in general take the path of least resistance..just like fluids but i have a different argument here...if you stop thinking about bigger things in life..by big i mean things having lotta scope to provide pain or pleasure....but even if lets say i ignore those profound things am i devoid of pain or pleasure...unfortunately or fortunately no..cos brains chemical balance follows the laws of thermodynamics and even with minor changes the chemicals flow from one direction to another sending signals of pain or pleasure...so pain and pleasure are form a curved graph...staircase curve...flat at lower and upper limit and positively corelated in the middloe section