If what you said was literally true, that nobody believes it, then there would be little point. But "nobody" is an exaggeration. Scientists are likely to believe it, or at least are in a much better position to evaluate the truth and utility of it, and build upon it.
When it comes to abstract science, eg, the ultimate origin of the universe, it doesn't materially affect anything if it is believed or not. But if someone produces a cheaper or longer lasting battery, the proof is in the pudding, and that basic research will have made a difference.
Then there is the category of hard science which is disbelieved because moneyed interests wish to discredit it, and/or it has become a political shibboleth to discredit the science. Those aren't due to bad science.
The problem is that significant portions of the population refuse to believe anything that comes out of science. This directly affects what politics decides to do about real problems like climate change. This isn't some abstract issue, it's something that's affecting us on an everyday level because people are unwilling to listen to the evidence.
When it comes to abstract science, eg, the ultimate origin of the universe, it doesn't materially affect anything if it is believed or not. But if someone produces a cheaper or longer lasting battery, the proof is in the pudding, and that basic research will have made a difference.
Then there is the category of hard science which is disbelieved because moneyed interests wish to discredit it, and/or it has become a political shibboleth to discredit the science. Those aren't due to bad science.