General consensus is that few people like that Apple did away with the headphone jack on the new iPhone 7 and 7 Plus. It's been around for over 100 years and integrated into every device from phones to commercial airplanes. You can't charge the new iPhone 7/7 Plus while simultaneously using a wired headphone. See this article to read more ...
I love technology and how it enhances our lives! Just think, without the Apollo moon missions, we might not have calculators! Imagine!!