Final answer:
Characters in various texts become friends because they are tired of being alone, seeking companionship and shared experiences to enrich their lives.
Step-by-step explanation:
The two men decide to become friends because they have become tired of being alone. This sentiment is highlighted in multiple texts, showing characters who find themselves drawn together out of a shared experience, whether it's the comfort of companionship in their twilight years, a mutual need to overcome common foes, or simply the human instinct to connect with others. These narratives underscore the theme that friendship can blossom from a mutual understanding or shared circumstances, leading to a bond that enriches each individual's life.