Just like how every grocery store checkout lane goes faster than yours! Its simple statistics. You are one; there are N more lanes. What is the chance that yours is the faster one? Small.

Recent discussion revolved around how your friends have more friends than you, on average. Similar argument (super-frienders have lots of friends; you are likely connected to one, and unlikely to be one).

So, actually, everybody else is likely having more sex than you. Its just statistics.

Yeah, how many times do we see tv and movies portray characters who report to not have had sex for "weeks" or "months" to be in a "dry spell" or as a "loser", or in need of some kind of sexual intervention.

The only time I've ever heard the media use "years" as the unit of time between sexual encounters is when the characters are enumerating the motivations for suing for divorces.