Well, suppose someone went out and asked a bunch of old people what they had done that they loved, and what they wished they'd changed. What journal would they publish their findings in?
And again, it's not just that knowing more about what people love and regret is useful, or that going out and doing science requires solving relevant harder-to-communicate issues - it's also that being interested enough to ask the question is a good sign. A person who actually goes out and collects data is someone who is trying to learn new things, push the boundaries of human knowledge. It makes me willing to bet on the average experimental psychologist over the average philosopher who's interested in well-being.
Why Talk to Philosophers? Part I. by philosopher of science Wayne Myrvold.
See also Sean Carroll's own blog entry, Physicists Should Stop Saying Silly Things about Philosophy.
Sean classifies the disparaging comments physicists make about philosophy as follows: "Roughly speaking, physicists tend to have three different kinds of lazy critiques of philosophy: one that is totally dopey, one that is frustratingly annoying, and one that is deeply depressing". Specifically:
He counters each argument presented.
Personally, I am underwhelmed, since he does not address the point of view that philosophy is great at asking interesting questions but lousy at answering them. Typically, an interesting answer to a philosophical question requires first recasting it in a falsifiable form, so that is becomes a natural science question, be it physics, cognitive sciences, AI research or something else. This is locally known as hacking away at the edges. Philosophical questions don't have philosophical answers.