Sin is not a word we use so much anymore because it is something that upsets society, but in this article other people talk about why they enjoy sin. The word could also just be translated to the moral short comings. This quote means that despite our status and what people think of us, sin is inevitable which makes us all equal in that sense. Lastly, the phrase exposes how to some extent society has changed over time as many are less likely to say 'sin' because it may be considered offensive.