All efforts have diminishing returns. If the tiny amount of resources our species spends on space exploration were re-directed towards taking care of Earth you

All efforts have diminishing returns. If the tiny amount of resources our species spends on space exploration were re-directed towards taking care of Earth you wouldn't see any difference there. And also, efforts in space benefit the Earth a lot through things like comms and weather satellites and by learning more about our come by comparing it with other planets. Comparing the atmosphere of Earth with that of Venus and Mars, for instance, told us a lot about the importance of the ozone layer and we might have only just stopped the production of CFCs if it hadn't been for space exploration.