I have grappled with the decision to upgrade to a new Iphone for months.  Instead of an iPhone 15, I compromised and got an iPhone 14 as the price was cheaper and I could keep the lightning chord.  I found out that the plugs for the newer Apple products are different.  I get a lesson in technological obsolescence.  I had the iPhone 8 for over 5 years, so I think I got my money's worth.