I agree with most of what you said; however, I had a different experience than you with CA winters. The 65 degree day you referenced could feel more like 45 degrees to me—not 80–on some days with a cold chill coming off the bay (SF and SD) that cuts right through you. A 3-4 day Santa Ana (when it warms up) was the exception, not the norm.
I have no issue with humidity provided one lives in an area where you receive coastal breezes. The worst days for me are when there is no breeze and no clouds in the sky. Fortunately, I have found those days to be limited to 30 days total during a year here in Miami, usually lasting no more than 2-3 days consecutively spread over 5 months.
My skin also stays more moisturized with humidity—I used to dread the December through March winters in CA where the dry conditions would have me scratching my arms and legs, requiring body moisturizer.
I also cannot recall too many dehydration headaches in a humid environment with them being more likely in a dry environment.
Depending on time of year, San Diego could have the warmest 65 degrees I ever felt (spring) and the coldest 65 degrees I ever felt (winter).
No concern about my cigars drying out with humidity (that’s what humidors are for, though they won’t unravel if I leave one out of a humidor for a few hours). I’ve also noticed less women who suffer from premature aging (or, those with damaged facial skin from being out in the sun too long) in humid environments.
I moved back East for many other reasons besides weather though I do agree the CA weather was not as perfect as locals made it out to be. Not awful, mind you, but not “perfect” throughout good portions of the year as many claim. The following is a 30+ year old dandy article but still rings true:
https://www.google.com/amp/s/www.lat...ml%3f_amp=true
Miami was supposed to be some hell hole, similar to the Forbidden Zone from the original Planet of the Apes—that, too, I have found to be overblown as the weather (coastal area anyways) is an asset to me, not a detriment.