I would look around more. You might like one of the small reactive frameworks if you find the large ecosystem of React and Vue off-putting. My last jQuery app was several years ago, when I realized I was just maintaining a slower reimplementation of a reactive framework. These are mature technologies now that quickly save time and prevent headaches down the road. jQuery's best lessons have been absorbed into both the reactive frameworks and native JS and you can alias the handful of selectors you're used to.

For development, browsers and version managers/containers are stable enough that you won't be on a deprecation treadmill. Any pressure would come from including other people on the project, which you'd get even more of with jQuery.

I appreciate the 'do what works' mindset quite a bit but I hope you'll give a modern reactive framework or library a try; I'm glad I made the change.