People just love to find things to complain about. There are a number of great options: 1)Get a different phone or keep your old phone. Noone's forcing you to use one without a headphone jack. You could even use an older iPhone if innovation frightens you in general and you're happy with your old setup 2)Get/use an adapter. THey're not expensive and sometimes come with the phone 3)Get/use headphones with the new styl…
This also depends on where the market goes, because pretty much all phone manufacturers follow Apple's lead to some extent. Removing the headphone jack, the notch and curved screen corners, and the non-replaceable battery are all features that Apple popularised.
So it may not be possible to get a phone without these features any more in the future.