On the other extreme - absolutely free - I would take Fort Lauderdale Beach and the weather over anything SV has to offer. After all there was a move to totally relocate Hollywood movie industry from CA to South Florida. And parks? What measure does SV outperform? Everglades National Park is probably 4-5x larger than SV and it's in Fort Lauderdale's backyard.
Though South Florida doesn't get the tech press, we also have billion dollar startups. As far as schools, I went to a public high school (top 50 in the US) not even the best rated public school in my area, but my 4 brothers and I all have graduate degrees, fellow alumni include astronauts, countless professional athletes and even a tech founder by the name Jeff Bezos.
I won't touch culture, because it is much to loaded but there is no shortage of meuseums dedicated to arts and sciences. Come to Wynwood during Art Basel and you might leave thinking we have the most progressive city in the world artistically. Finally, I don't want to minimize the diversity of the SV demographics but it again doesn't compete with the diversity and actual cultural influence these various background have in South Florida.
Surfing. Significantly better in the bay area.
Seriously though Fort Lauderdale beach and Hollywood beach have great surf communities that have been around decades.
Florida is absolutely a garbage state (born and raised Floridian speaking) but there's no place in the US that is even in the discussion when it comes to water recreation-- MAYBE Hawaii.
Edit: to get an idea do a Google image search of Fort Lauderdale International Boat show. As to your quip about things with motors, South Florida is also home to the largest cruiseships in the world (>100,000 tonnage) that are dubbed floating cities.
Not really. The quality of life on just about any axis, from parks and recreation to culture to education in Ft. Lauderdale is just inferior. Also, $50k doesn't go as far as you think there. There are a number of day-to-day and intangible costs (e.g. commute) that are actually less expensive in the valley.