A mowed lawn is nothing in comparison with more knowledge about the Universe. Astronomy has a lot to offer; the space is one big laboratory where experiments run 24/7, we just have to sit back and watch. And then, typically couple decades past the discoveries, get the underlying principles applied in technology. The GPS sats we have now are using relativistic corrections in their math; and the theory of relativity was confirmed by astronomical observations. Knowledge of formation of stars may be useful for nuclear fusion, and who knows what the data from molecular clouds can help with for tomorrow.
And you can move the lawnmowers to some less important frequency anyway, there are enough just nearby. So no loss even for the “property values” and their overinflated importance.