Itachi died from succumbing to his illness and Sasuke gave Deidara a chance to live it was him who decided to commit suicide and take Sasuke with him-what manga are you reading?
This is irrelevant to the thread as you're describing how he should have died long ago. Also, what you aren't considering is that he went up against 5 Kage and even Naruto who've had trouble if he was in his place. Sasuke's main goal was Danzou and after basically defending himself against the Raikage, he didn't put up a fight but rather attempted to escape the rest of the Kage.
Sasuke is not the first or last character to solely strive for a goal as there are many in the Narutoverse who haven't been with females and many other manga have displayed vengeful characters like Sasuke whose life was lived to extract revenge.
@All the above people/anyone else who feels that way:
First off, to those who resulted to becoming a child; there was no need to get your point across with insolence.
This all began with Itachi who initially pushed Sasuke onto the path of vengeance. Orochimaru branded Sasuke with the Curse Seal of Heaven to tempt him with power as well as to corrode and corrupt his mind. There is also a misconception that Sasuke has been manipulated by the "masked man" ever since he captured him. However, only after Sasuke received confirmation from Danzou, did he finally accept the masked man's confessions. As a result of the darkness and his unstable mentality after his fight against Danzou, the masked man began to take advantage in corrupting/manipulating him.
People also seem to have forgotten about Gaara whose life was similar in comparison to Sasuke's. People who state that Sasuke allows himself to be corrupted and or manipulated have overlooked Nagato whose life is similar to Sasuke, having been manipulated by the masked man. Nagato/Konan have killed many to advance the masked man's goals and so Sasuke is not the only international criminal. Sasuke is about the only one left who hasn't been "changed" by Naruto. However, that shouldn't be enough to give up on his character as Gaara/Nagato/Konan/Danzou have all had their day of salvation.
Kakashi and Naruto have not led a life of influence like Sasuke. When Naruto heard about Jiraiya's death he blamed Tsunade, was consumed with anger/vengeance and came close to ultimately extracting it. If Naruto or Kakashi had the deaths of Obito/Jiraiya play two separate times for 24 hours, do you think they'd come out the same? Kakashi and Naruto lived through a tragic life but were both able to choose for themselves, influence free. Kakashi more than Naruto but did they did not have someone heavily instigate their future choices three times like Sasuke had received from Itachi, Orochimaru and thus far with the masked man.