Composite decking certainly will not warp, twist or splinter like lumber could. However, some exotic hardwood decking is denser and more scratch resistant than composite decking. Some composite decking has a “Stain and Fade Warranty,” meaning that what you see is what you get–forever. Natural wood, on the other hand, can be stained and changed but requires a bit more TLC. For many, though, that is a benefit. So it really depends on the product and which characteristics are most important to you.