I was on a beach with friends last week during a holiday. Instead of building a sandcastle I sat with the friend that was not going to build anything. The other two each started thier own sandcastle and then, once they destroyed the others, started working on one together.
I might have been more inclined to join in if I was wearing shorts instead of jeans and if the temperature had been closer to what I consider beach weather.
Maybe at the end of the year.