Let me interrupt you, we don't have to "logically conclude" anything, we have a written documentation of what they meant, it is called the Federalist Papers. In those, Madison states it very clearly what he was talking about when he wrote "general welfare" and every other general statement found in the Constitution. He says it's stupid and foolish to conclude they meant an open-ended clause which would enable Congress to deem anything they pleased as "general welfare" or for the "common good" and that such a mindset was ignorant. He further stated that following the general clause, is an articulation or enumeration of specificity, detailing exactly what was covered. In other words, we don't have to speculate or conjure up meanings, it's stated very clearly and concisely in the document itself. This means, since there is absolutely no mention of insurance, it is not included.
