Wolverine is old, He's lived a long time. He's experienced different cultures, wars, world changing events.
He's wise, educated, and worldly. He's also feral, gruff, prone to rage and dark moods.
He's also incredibly loyal to those he loves. Fiercly so. He has a very tender heart underneath it all.
In the outside he appears unapproachable and hostile, he distrusts people he doesn't know but to those who know him well he is the truest of friends.
His life has been full of pain and loss, but he pushes forward regardless. His healing factor is strong but really it's his incredible will that let him use give so much suffering.
Jackman didn't portray him with enough weight. His Wolvering felt like a light mock up, and while it was entertaining it didn't capture the essence of the character.