He was finally free. He and all his friends were finally free and there were no more Resets. He and Papyrus could finally see the stars and sun and he could enjoy it, he could enjoy what life he had now. All he needed to do now was to bring someone back and he could dust happily. Though, he should have known that life would not be easy on him. Though, don't be angry at him that he didn't think to foresee that he would meet his and his own brothers alternate versions with his father free and have a demonic maid.