I think you might have to throw-out modern thinking and step back in time a bit.
I am guessing that these ships carried allot of weight onboard considering all the cast iron cannons and stores etc, they needed something fairly buoyant with a high block co-efficient. Pointy bows were probably not too much concern when youre not going too fast. You could also question why they had relatively small rudders? I'm also guessing when the weather was too bad they didn't try and lob too many cannon balls at each other either also?
Things like complicated joinery, compound curves I don't think would have been much of an issue. They were expert artisans with plenty of wood available. Probably never thought twice about carving a 99.99% straight plank purely by eye, with hand tools, then bending it backwards, putting a reverse twist and only needing to pinning it in place afterwards. I'd imagine some of them could even do it blindfold and still get close to an interference fit. It's a skill not around these days much like folk don't make chronographs by hammering brass sheet flat then hand filing all the cogs. I'd bet they probably also had enough wood to hand that they didn't have to worry too much if things broke part way through also. That analogy is a bit like modern naval architecture where compound curves were the norm until about 30 years ago, last 20 years or so, most technology evolves around using 2-D geometry on each individual plate now.
I do think it's interesting when you look at the Dutch, for example, who used to carve clogs from solid wood. How many period boats from the Netherlands have hulls which look a little bit like a clog?
I only make my comments as someone who studied Nav Architecture, but never technically worked as one since. Evolution of heavy engineering is a fascinating subject. I digress but I always remember my late Father (an engineer also) teaching me about how machines evolved, but one thing always eluded us: who made the tools who made the first machine tools that made the first machines? And how was something like the accuracy of a chronograph even conceievable when the ship itself was still carved from wood!!
Rich