"...to paraphrase - of honesty and openness engendering warmth, compassion and respect. Those aspects may be evident in sunbathers, but for me, not sexual attraction.''
Warmth, compassion and respect begin a good relationship and a more relaxed atmosphere. It is attractive. Often, one thing leads to another and this is the catalysts. Sexual attraction doesn't just mean a visual physical attraction, but feelings, meeting of souls, just liking someone, or excitement. I would suppose that these can be the main attraction.
Up, laying about can certainly be a form of meditation, of relaxation, sun feels good, and tans look good. Just being there relaxed can be very welcome and sometimes necessary to getting an even base coat after a Winter. It is pleasant just to sit and watch the world go by, the sun traveling, the waves hitting, or others activities. I have fallen asleep on beaches. People leave me alone on beaches and I often like that. Beaches can be like kids in parallel play.
I'll enjoy a good day laying around in it. It is a good time to enjoy what is inside as well as outside a body.
Jbee