I'm sorry if this sounds like a dumb question, I'm not very well versed in the lore at all. But why do the elves only seem to sail if they've experienced a loss of something or are called by the sea longing? Some elves lament for the white shores of Aman for years, but if that is so, what is stopping them from sailing to this said to be pure, perfect land? Or for example, when an elf sails for Aman, can't their families easily go with them? Is it just the simple fact of being born in Middle Earth and not wanting to leave the land they have developed ties to? Again, I'm sorry if this has a really obvious answer, but I've just found myself confused by it.