A man can only do a given thing so many times with freshness and spirit--then, no matter what it is, it becomes like an office task. I enjoy cards and whoring, but even cards and whoring can grow boresome. You tup your wife a thousand times and that becomes an office task, too.
The quote reflects the idea that repetitive activities, regardless of their initial enjoyment, can eventually become tedious and monotonous. The speaker suggests that even pleasurable experiences, such as playing cards or intimate relations, lose their appeal after being engaged in multiple times. This theme illustrates how the excitement and freshness of any activity can diminish with overexposure.
The notion expressed emphasizes that human nature is inclined to seek novelty and variety in experiences. When something becomes routine, it no longer evokes the same enthusiasm, turning it into a chore rather than a source of pleasure. This insight speaks to the broader understanding of how engagement and excitement can fade over time, affecting not just leisure activities but relationships and responsibilities as well.