Inception: What do you think of the ending?

when my dad gets a hold of a little touch of the crystal meth,and reminiscs about the stories of all the drugs he took in the psychiatric hospital......talkin' about being stuck in the real hell for 13 years and being killed over and over and over,they would get creative like,chain saw like objects up the ass hole while swimming in scolding water...until you got used to that death so they would switch it up and smash your hands and feet into the ground and put an infinitely hot coal on your belly button and said if you kill yourself you can spend a lifetime with us....until eventually he learned to hurt them and put them through billions of similar deaths until they become afraid of him and then he got sucked into another reality where all of the western united states was a barren nuclear wasteland except for certain forests of sequoia trees in california,where he wandered the forest for days until these witch like girls appeared to him and taught him how to evolve into animals to survive,and they warned not to stay in one animals form for too long or instincts would take over and you would get stuck and ultimately die,but if you hopped from animal to animal you could live forever,and he did for a long time....said he got lost for 900 years being crows and other birds and would nearly die because of the instincts every time,it was hard to snap out of being that individual creature and become another one because in the back of his head,the instincts are very powerful...but he did snap out of it,and in this way of evolving from human to animal he made his way to the more eastern states,where there were a lot of people sick with radiation poisoning and the government was just taking them out,military troops were shooting their own people basically,evolving into a bird was his favorite and most comfortable means of transportation so he got out of there...and then he snapped back into this reality....and that was just the "morning" medication they had him take....and they switch the medication every 2 weeks,either increasing the dosage,or changing the medication altogether...fuck