When you think of iconic comedy series that stand the test of time, “It’s Always Sunny in Philadelphia” may not be the first show that pops into your head. Perhaps it should. After all, when Sunny completes its 14th season, it will tie “The Adventures of Ozzie and Harriet” as the longest running live-action comedy series in history. The reason for this series’ success is two-fold: For one thing, the endless scheming, greed and narcissism of its characters developed by Rob McElhenney and Glenn Howerton makes for some darkly hilarious situations. And secondly, the support and nurturing of execs at FX Networks has let the series grow and evolve at its own pace. This show, which started on FX and moved to FXX in 2013, now fires on all cylinders, and we can’t help but secretly wish we could be part of “the gang,” free from any semblance of decency and humanity. But instead, we’ll settle for drafting them into the TV Hall of Fame.