The question is: what WILL be the useful benefits of this research in the future. And we don't know that. That's the nature of blue sky research.
But let's look back at the 19th and 20th centuries to see what value fundamental physics research has had.
At the time research into electromagnetism was quite esoteric with little practical use. Yet, of course, it turned out to be hugely advantageous in many ways. Electric motors. Electric lighting and heating. Electric appliances in the home. Radio. RADAR. Television. Telephones. Etc. Electromagnetism defined the industrial advances of the 20th century and easily was responsible for literally quadrillions of dollars in economic value.
Later, advances in computational theory and especially quantum mechanics and condensed matter physics enabled the electronics and computational / digital communications revolutions which gave rise to the modern internet, smartphones, personal computers, and even high-efficiency/low-emission automobiles (through micro-computer based engine control). Those technologies have been responsible for easily tens of trillions of dollars of economic value (if not hundreds or more) and are utterly dependent on advancements in basic science which at the time had very little practical use. The laser, for example, was originally lampooned as a solution looking for a problem, though of course eventually it became an important component in the backbone of modern industry and commerce.
At the time absolutely none of these benefits of this research were obvious. And in many cases it took many decades up to a century or more for the benefits to be realized. But just look at the enormous RoI generated. Imagine someone in the early 20th century systematically campaigning against high-energy physics research because it had no immediate practical application. Imagine how many trillions upon trillions of modern economic activity would simply not exist today because of that short-sightedness.
I could enumerate all of the practical benefits of high-energy physics research over the last, say, 2 decades but that plays into the wrong game and misses the point. Ultimately we don't know what we are missing out on by not pursuing certain categories of knowledge. And occasionally pursuit of blue sky knowledge produces not just enormous levels of RoI but absolutely civilization defining levels of return. Thus we should pursue such research with a healthy level of investment regardless of the perceived short-term applications, because the benefits of hitting the jackpot are too great to sanely do anything else. It's possible that knowledge of the higgs-field will have no practical, economic impact on human civilizations, ever. But it's also possible that it could lead to quadrillions of dollars in economic value over the next several centuries, the only way we'll find out is if we acquire that knowledge.