ive already stated this long ago numerous times....in my head...lol..
Orochimaru liked Jiraiya/Tsunade......But his parents DIED...Hiruzen became closest to a Father figure...
Orochimaru always got praised by Hiruzen......He felt over pressured to be the best(GENIUS/PERFECT)
Oro's ideas about life were shaped to what's the point of living/fighting/of life if your going to die anyway...
He never really felt like a genius/or strong when successfully completing a mission...
He constantly witnessed his friends losing loved ones and dying(like he did lose family)
Tsunade lost Nawaki/Dan...(Oro saw Tsu frantically trying to revive Dan,..but to no avail..)
it was useless to try to keep someone from dying / bringing them back to life.......
Tsunade was sooo sad about death...to Oro it was just an inevitable part of life....no need to be sad....
He hated the Leaf's way of dying happily instead of doing all you can even if it means breaking the rules to survive...
Tsunade's ancestors (1st & 2nd) died protecting the village that now praises their sacrifices...
but they arent there to enjoy it(honor) Jiraiya's parents are still alive at that point(he doesnt understand Oro's pain)...
Oro is having inner turmoil about Hiruzen wanting him to follow in his footsteps
and carry on the WILL OF FIRE...like the already dead Hokage...(and Hiruzen's father Sasuke Sarutobi)
Oro didnt want to die clinging to life like the others...A True Genius doesnt do that...
A Perfect Shinobi sees through the cycle of life/death and breaks out of it...
Hiruzen showed Oro the beautiful SNAKE summon MANDA and taught him about bonding with HIM
and how beautiful life was.... Oro couldnt understand it as a child and still couldnt grasp it as an adult...
The inevitable horrors of war..People cant learn to live in peace...someone will eventually seek revenge
for a fallen comrade...Oro discovers the secrets of the Leaf's Forbidden Jutsu
and what made the 1st and 2nd so great,Legendary!!
He wanted to feel THAT power, he wanted to be a PERFECT being!!
and in order to do that, you have to surpass EVERYONE ahead of you...
that means NOONE can get in your way..noone...not even your MASTER...
Oro/Jir/Tsu fight hard in war defeating their foes....Until they reach Hanzo..!!!!!
They dont defeat him and he lets them live..(or they fought too well to be defeated)
the battle waged on and they earned the respect and honor of Hanzo..
He named them the HIDDEN LEAF'S 3 LEGENDARY SANNIN!!!!!!!
Oro was happy to be alive but ashamed that those 3 couldnt defeat ONE guy after all the praise they get in the Leaf...He wanted that level of power. He wanted unstoppable jutsu...He didnt want to worry about dying anymore...
He wanted to be a GOD...and what better way to be a GOD than to grasp
THE GOD OF SHINOBI's jutsu...you know the rest
He wanted to punish the leaf for not understanding hsi way of thinking
and blaming them for making him that way...