Yeah, we mostly think of boats built out of Fiberglas/Aluminum/Steel,, and sometimes the more modern iterations of wood/epoxy.
All of the above have both strong and weak points,, no free lunch.
So, letting my mind wander; When I win the lottery I shall then be in a position to have a custom boat
built, using whatever materials I wish.
If it's a BIG win, I'm not sure that anything could beat-out a boat
made out of Titanium;
If it's a smaller win, the use of Copper-Nickel would be hard to beat;
But, if you want to spend even less, you could use CDA 655 Silicon Bronze
,, the "Old Man", Nat Herreshoff was using Bronze
over a 100 years ago.
No rust, no corrosion
, and no bottom paint
Their are several high-class builders that can easily roll metal into complex compound curved shapes to make a nice and fair hull
without resorting to a few tons of filler.
The Cu-Ni and Bronze would want paint
above the WL, but I'm thinking that the Titanium would look just fine with its dull/satin color,, but you could buff it out.
Oh well,, sometimes it's nice to think "what if".