It’s truly one  hell  of a hotspot.  The Big Apple is actually rotten to its core, claims a scintillating new study that crowns New York City the No.1 “most sinful” city in the US.  What a devilish accolade for the place where dreams are made.  NYC has been dubbed the most “sinful” city in the US, owing to its many bars, clubs, pubs, tattoo parlors and adult entertainment venues — as well as its high concentration of singles and shocking STI rates. Bloomberg via Getty Images While Las Vegas streets may be paved with booze-slinging bars, cash-draining casino and saucy strip joints, Nevada’s notorious “Sin City” nickname may no longer be fitting as Gotham outpaces the debaucherous destination in nightlife venues and sexually transmitted infection (STI) cases, per the 2026 data.  “New York City dominates overall ‘sin density,’” wrote researchers for PokerTube , the world’s largest poker media portal, in the hair-raising report.…