There's more to it than just how long it takes to get to the boat. There's also how long it takes to get the boat to where you can actually sail. We had a choice -- put the boat at a marina 5-15 minutes from our house but then spend 1.5 to 2 hours motoring out to the bay or put the boat in a marina an hour or so from our house but once we leave the marina we're out sailing.
We chose the latter.
*EXCELLENT* point. Even though the Jendai is right in my backyard, I'm a good 45 minutes to an hour to the inlet. The problem was, I couldn't afford waterfront east of I-95 when I bought the house in 2007. Now, though...I'd seriously look at some of those houses as they're in the same price range I paid for my house!