I had wired headphones, went to a good wireless one (Sony WH-1000XM3), and I will never go back.
Most people I know that want the headphones jack back want it to be able to use good quality wired headphones they already own, mainly because they can't afford (or just don't want to buy) a good quality wireless one.
Seriously. If you can buy a new mid-range smartphone, you have enough to buy premium wireless headphones. If you can't, most cheap smartphones have audio jacks. Just skip this smartphone generation to buy good wireless headphones and you are set for years.