Jordan, there is definitely laziness on both sides but your words are at the heart of this problem - "you many never see again." Dating apps caused people to be viewed as disposable. We have too many options so we choose no one. It's fast food romance - we choose quantity over quality.
Generalizations aside, just imagine if your path collides with a romantic like myself. That person isn't going into a date thinking I might never see this guy again. She is going into a date thinking I am meeting someone new and they might change my life in big or small ways. That woman puts in effort. And if you don't reciprocate, you will lose her.