We’re all going to get old. Unless we don’t. That’s a hard fact we live with every day. The Oscar-nominated 2012 documentary “Kings Point” (8 p.m., HBO) takes a bittersweet look at the residents of a Delray Beach, Fla., retirement home.

Many of the subjects of “Kings Point” have been in their condominiums since the 1970s, and have lost spouses, friends and family members. Most live alone, but they have one another, and occasionally admit they need that. Some men and women couple up, while other feisty elderly women recoil at the thought of taking care of an “old” man. And they share these thoughts with colorful audacity.

While Kings Point is not as fancy as the Del Boca Vista home where Jerry’s parents lived on “Seinfeld,” its residents would not be out of place on that comedy. We learn that muscles, memories and hairlines may recede over the decades, but the human capacity for passion, jealousy, longing and loneliness never flags. It’s a film as frequently amusing as it is moving.

In exploring our society’s ambivalence toward aging, and our need for community as well as self-reliance, director Sari Gilman has found a thought-provoking subject. But more than that, she has uncovered a memorable cast of characters. This is very highly recommended.

Tonight’s other highlights

• Another season of “The Bachelor” (7 p.m., ABC) concludes.

• The school’s fate is decided on the spring season finale of “Switched at Birth” (7 p.m., ABC Family).

• A tip about a massive sale of a dangerous chemical portends disaster on “Continuum” (7 p.m., Syfy).

• An old disciple catches up with Carroll on “The Following” (8 p.m., Fox).

• Andrew wades deep into Wisconsin’s dairy culture on “Bizarre Foods America” (8 p.m., Travel).

• The Ewings discover the shocking truth behind J.R.’s death on “Dallas” (8 p.m., TNT).

• Recordings of Vivian’s therapy sessions prove revealing on “Deception” (9 p.m., NBC).

• Violence hits close to home for Villanueva on “Monday Mornings” (9 p.m., TNT).