It’s official now: There’s no 3.5-millimeter headphone jack on the latest iPhones. Or the latest Motorola phones. Or LeEco phones in China. And it will be disappearing from other brands, too.

“WHY!?” scream the masses. “WHY!?”

Actually, that’s not the masses’ only question. So here, all in one place, is the complete list of questions and answers pertaining to the iPhone 7 and its lack of a headphone jack.

Q: Why? In God’s name, why?

A: Well, to paraphrase my own article yesterday: The 3.5-millimeter jack debuted with the transistor radio in the early 1960’s; it was, for example, on the Sony EFM-117J radio, which came out in 1964. In short, the jack that everyone’s whining about is 52 years old.

As a result, it’s bulky. And in a phone, bulk = death.

By today’s standards, the 3.5-millimeter jack is huge on the inside. (See the red box below.) The cylinder that accommodates your headphone plug is now among the thickest components of your phone. That internal assembly is what’s preventing phones from getting any thinner — and what’s preventing their batteries from getting any bigger.

Apple says that in the iPhone 7, removing the headphone assembly made space for three useful improvements. First, the battery is indeed physically larger; it drives the phone for 2 hours more than the previous iPhone.

Second, the iPhone 7 gains an optical image stabilizer — a suspension for the lens that prevents blurry photos when your hand jiggles slightly — and that component is pretty big, too.

And third, the new screen technology occupies more space.

Q: Well, how am I supposed to listen to music?

A: In the box, you get a new pair of iPhone earbuds that plug into the Lightning connector — the phone’s charging jack.

Q: That’s absurd! I don’t want to have to use Apple earbuds!

A: You don’t have to. Many other companies sell headphones and earbuds that also plug into the Lightning connector.

Q: Oh, great. So I have to buy brand-new headphones?

A: No, you don’t. In the iPhone box, you also get a small adapter that lets you plug any headphones or earbuds into the Lightning connector.

Q: But I have two favorite pairs of headphones!

A: Apple’s Lightning adapters cost $9. That’s cheap enough that you can buy a second one and just leave it on your other headphones.

Q: How am I supposed to listen to my car’s aux jack, or to a plane’s in-flight entertainment?

A: Plug your existing headphones into it.

Q: If the Lightning jack is occupied by headphones, how am I supposed to charge the phone while listening?

A: You have two choices. You can buy an adapter that offers a second Lightning jack for charging, like this one from Belkin.