They’re not putting balls in play. We’ve just had the first season in history in which the majority of outcomes were what the sabermetricians call “the three true outcomes”: homeruns, strikeouts, and walks. We would have a LOT more action if players would stop swinging for the fences all the time.
They need to change the incentive structure. We need more good hitters to be rewarded, and not so much homerun hitters.
Professional hitters found their way into lineups before the DH, and they would find their way into lineups without the DH.
Personally, I like 1-0 pitcher’s duel. Not all the time, but I enjoy those games a lot. They’re exciting and strategic. (I like to “manage along.”)
The DH causes more pitching changes and reduces strategy, while creating an average of half a run per team per game.
Interestingly, baseball didn't get to this point -- where so few balls are put in play -- by accident. It's a natural consequence of analytics ... because computers helped us realize that getting runners on base and moving them around the bases is actually a very inefficient way to score runs.