User blog comment:Monkey.D.Me/NEW WORLD TURF !!!/@comment-4618942-20120106144340/@comment-3075024-20120106152319

True, Shanks likes to make friend and he will protect his friends if someone tries to harm them. There was incident which accrued during Marineford Arc but went un-noticed cause so much things were going on.

When Whitebeard was coming to Marineford to rescue Ace, Kaido the Yonko was planning to attack Whiteberd Pirates in midst of chaos and kill Whitebeard. BUT !! It was Shanks who blocked Kaido's way and defeated(or made him retreat) before he can reach Marineford. This shows how caring Shanks is toward his friends that he will take on from a mountain bandit to a Yonko without a regret.