Seriously though, I live without AC at home (Portland, OR, so not a real hardship) and often wear a cap and vest during the winter. I kinda like having more connection to the outside temperature.
Sure, it's more humid, than, say, San Diego, but it's not humid in the PNW, by any rational means.
There's a reason AC is uncommon up there, because it's really not necessary.
As for heating, that's more of a concern up there, and that's why oil heating is WAY more common there, than, say, Alabama. The opposite is true for cooling, too...
But, as someone else who lived in the PNW, I have to agree with you at least on one front, some good fingerless gloves are basically necessary in the winter.
No, but I've seen PowerPoint presentations that were designed by someone wearing mittens...
Humor aside, there's a point for me at which even with more clothes the AC is too cold or aggressive and I end up with headaches. Fortunately I am aware of it and I try to be preventive about it (by moving away from the thing).