The natural purpose of a bottom is to take the cock and cum of dominant men. This provides fulfillment for the bottom even without an emotional connection with the top. The satisfaction of the bottom increases with the number of top's he services. Only his time and energy limit his capability. Each load he receives affirms him in his role and reinforces his desire to serve. He prides himself in pushing his limits and in being the most compliant fuckhole for the use and pleasure of men.
Men providing sexual outlet for men is a part of any normal society, as the ancient world clearly shows. Men need to release their pent-up seed and are only properly satisfied by its release in the body of another. In the ancient world there was no gay and straight. Men taking a dominant role could freely fuck other men without this being seen as a challenge to their masculinity. When women were not available (quite often), or by personal preference men would seek more submissive men as a sexual outlet. The submissive man could be a younger man, and this was seen as a normal part of learning and maturing for the younger male, or it could be a male prostitute or naturally submissive male. Men fucking men was unremarkable, normal, even admirable. Male nudity in the presence of other males was normal, male beauty was esteemed and celebrated. Dominant males found release and affirmation in freely using the bodies of others. Submissive males found their satisfaction and affirmation from being used by dominant males and from their own skill in maximizing the pleasure of the top.
Clearly, in the modern world we have gone very wrong. The currently dominant religions are perhaps largely to blame. I can only pray to my own gods that we will return to the correct moral principles and behavior of a more normal society.