Palm trees are beautiful and are a symbol of tropical weather and awesome vacation time for some.
It also makes people think of the beach. Many people get these tattoos either because they live in the warm south, or because it reminds them of their time in tropical weather.
Many people love the Christmas season so much that they get tattoos inspired by the holiday. I have seen everything from Santa, snow, The Grinch and more. Men and woman have gotten these awesome tattoos. Just try and be original. Get a good artist to do it.