That's an age-old question. "Should we solve other problems besides what we think are the most important problems?" One problem with answering this question is

That's an age-old question. "Should we solve other problems besides what we think are the most important problems?" One problem with answering this question is that we don't know what avenues of research will produce important outcomes. Historically, we have been very bad at it. The mathematicians working on group theory in the late 19th century had no idea how important it would be to 20th-century scientists and engineers. Spaceflight, in particular, is an important part of the specific problem of solving climate change. Imagine trying to understand climate change without the use of satellites!