Actually maybe I need to draw you a picture. The nature of the lightning jack leads to more stress in the cable, then a 3.5mm jack which by design is free to swivel in the circular jack socket meaning less stress on the cable, with is especially important for a cable such as a headphone cable which is used in the way that people use their headphones.
Because it would be far more logical to not drop the 3.5mm headphone port which is an INDUSTRY STANDARD than to move to a proprietary connector which you can't use with non Apple products.
And not using bluetooth means all the inconvenience of a proprietary connector, or having annoying adaptors, for no other reason besides Apple's combined arrogance and greed.
Removing the 3.5mm connector leaves solutions that are inconvenient and annoying, so its laughable that you'd need a 'solution' just to deal with that.
This is crazy - Again why would Harley Davidson move using a propriety Apple system, when the entire rest of the industry uses 3.5mm ports, making it the most ubiquitous connection and a great way to ensure a device from pretty much any manufacturer is usable with their system. In the smartphone market, Apple are minor players, Android phones have the majority of the market share. After what Apple did to manufactures that used the 30pin connector to make their devices iPhone compatible, I doubt any of them want to go anywhere near anything Apple proprietary again.
There is no advantage. The space saved is minimal, getting more battery in there is nearly impossible, another speaker is a fairly pointless waste of space as the improvements would be minimal due to the close proximity and I could guarantee more people use headphones than the built in speaks. Waterproofing the phone is already doable with the existing port given most competitors have done it also.
All it serves as is a money making exercise - Adaptors mean more money, proprietary connectors and licensing fees mean more money also. And it again exposes another area of Apple's fundamental lack of care for the environment beyond the 'Greenwashing' they carry out. Kudos for them for their recycling, but that doesn't forgive them in other areas.