User blog comment:Yountoryuu/Shanks the Annoyingly Awesome Pirate/@comment-188.4.15.53-20110307075256/@comment-3242083-20110307080029

And while fighting the Blackbeard pirates, the rest kill each other for nothing. Especially the remnants of the Whitebeard pirates would have been crushed by the admirals. Marco could barely hold off Akainu, the rest was completely helpless. And here we don't even talk about Aokiji and Kizaru joining the fray.

Shanks ending the war was the best solution for the time being, really.