....2 of the 5 we owned were awl gripped in dark colors. Wow, I love the way they look. IMHO, dark hulls are beautiful. Again, that esthetic vs. practicality equation. ......
This is a very good analogy. Dark hulls are only aesthetic and serve no practical purpose in the utility of the boat. At least teak decks do have some advantages, even if overwhelmingly aesthetic and pricey.
With a painted hull, you have to be all that more diligent in maintenance, or you'll be repainting sooner than you like. Once painted, always painted. No turning back. BTW, I think its much more difficult to return to non-skid, from teak, than many imagine.
In both cases, however, there may be a real psychological benefit. As they say, a spoonful of sugar helps the medicine go down. All boats, that is ALL boats, will require some heartbreaking, frustrating expenses and/or work. It's important that one can sit back, from time to time, see the result and really feel it is worth it. Aesthetics can do this for some people.