Kant remarked that there is some truth in any common concept and some fallacy or error. For this reason it is well to try to find the truth that might be present, perhaps concealed, in an opponent's arguments and attempt to build on that. In this way some progress might result.
Excellent points to be sure. I’ve come to rely on my instincts when all else fails; for example, when I’m unable to comprehend the intricacies of a highly technical piece. It obviously does’t, and can’t work all the time, but seems to be serving me well the older I get.