Having purchased a boat that spent its initial years in warmer salt water climate, I'm voting with Mort.
It isn't just the exterior ss staining and corrosion and the accelerated reaction with any ss stuff against aluminum, it's also the
sea air...
As salt crystals condense out inside the boat the resulting dampness affects
everything from upholstery and the headliner zippers to all the wiring and instruments.
Salt air is pervasive and relentless. A formidable foe, as it were.
Having said that, over half of the potential problems are directly the result of prior owner(s) not doing their maintenance / due diligence and keeping everything wiped and/or washed down with fresh water, well-ventilated, and dry. (This personal opinion worth about .02 on most days, of course.)
As mentioned already, the standing rigging will be directly affected, and probably best be on a 15 year replacement cycle. In fresh water I would go 20 years, and some blasé owners around here cheerfully let it go for 30 years.
So, nothing wrong with a salt water boat, just more regular maintenance that needs to be factored in.
LB