hmm u r seeing it only one point of view see being blind from birth is nothing much problem but think u r 20 yr old and enjoying life and lose u r eyes thats what hard and thats what happened to sasuke
u know naruto always had 3rd,iruka, later Jiraiya eventually most of KOnoha genins with him who are all helped him be with him
on the other hand sasuke had family , friends and all from start and all of sudden he lost everything and what u do when u r parents getting killed by u r own brother who u love more than enything ,,,sasuke left alone and no one picked him
oro just wanted his body ,,,and no one understand and tried to pull him up and later he lost his only brother and thats also for some false reason where on other hand naruto had whole village with him soo obviously sasuke suffered more