Hi there, I think the excerpt below from the website “This Old House” is a great answer to your question.
Going back 400 years, the favorite residential fencing material in this country has always been wood. In 2007 alone, Americans put up 59,000 miles of it, enough to circle the globe twice, and then some.
Why wood? It's inexpensive and lightweight. The main reason is that a wood fence can easily be shaped to give properties character and individuality. You can choose from dozens of styles, including linear post-and-rail and crisscrossing lattice, as well as myriad picket patterns and post-cap designs. And you can stain the wood to make it pop out or recede from the landscape as either a vibrant or subtle frame for what's behind it.