Again the whole problem with the "science can't (or shouldn't) tell us why we should do X" is that... nobody has offered an explanation that isn't completely self defining for what can (or should.)
That is the point; there isn't one. It is self-defining, basically. Until you identify your goals, and science can't tell you what goals you should pursue. However, if you make the choice on what goals you want, what your values are, then science is the best option for meeting those.
It does seem more and more like people are, intentionally or unintentionally, trying to take everything that they define as "not science" and start acting like it's a unified thing when the only defining factor is what it's not.
Okay, have no idea what this is about. Some things are not science; the things that aren't are not unified at all. Some things are not science because they're crap (various woo things, stuff that's contrary to logic or reality). Some things aren't science simply because they are not objective (what movies you should like, what your favorite ice cream flavor is). And, even in science, there are things that science itself can't prove: axioms on which everything else is based. We accept those axioms because, using them, we can produce theories and advancements that are practically, demonstrably useful. It's really not any different in morality or ethics. But science can't tell you what the axioms should be...those have to be decided by some other method. We could, for example, take a page from science and use axioms that produce practical results, which is more or less the way morality, ethics, and law has worked throughout the years.
It's like the intellectual discussion version of the social discussion term "People of Color." It doesn't matter if your African American, Asian, Native American what matters is you're not white.
If "Well science can't answer this" doesn't lead to what does answer it, what's the point?
This confuses me. So you don't listen to music, or watch TV? Science can't answer what music you should listen to or whether or not you should go bowling, that's your choice based on your interests and mood. Doesn't make it pointless.
And morality and ethics do have practical effect. Essentially, discussion of ethics and morality is us trying to come to a group consensus on what the axioms should be for our moral systems. Typically, just like in science, this comes down to which axioms lead to the most useful, practical results.
No one is arguing about that part of it. Once you decide your axioms, your goals, your idea of what morality
should accomplish, ten science will help you determine how to apply that.