"I'm here because I need to be alone! How am I supposed to find any inner peace with people badgering me all day?!"

It was only partly true. While the solitude of this cave would've definitely helped him while he was searching for the strength to overcome this, it was also better to be away from people when he failed to do so. He was on the verge of giving up, but to hell with it all if he'll let Raine accuse him of being a quitter.