That's a great question! I completely understand the appeal. There's something timeless and warm about wooden park benches that metal or plastic just can't match. But when it comes to practicality for year-round outdoor use, the answer isn't a simple yes or no. It's a "yes, but...
The key lies in the type of wood and the level of maintenance you're willing to provide. Not all wood is created equal for battling the elements. Dense, durable hardwoods like teak, cedar, redwood, or white oak are champions. They have natural oils and tight grain that resist moisture, rot, and insect damage. A bench made from these, especially with quality construction, can absolutely thrive outdoors for decades, developing a beautiful silvery-gray patina.
However, a softer, untreated pine bench will struggle. Constant sun, rain, snow, and freeze-thaw cycles can cause it to crack, warp, and decay relatively quickly. The practical solution here is commitment. Even the best woods benefit from annual maintenance. A fresh coat of a protective sealant, oil, or stain every year or two is like sunscreen and a raincoat for your bench. This shields the wood from UV rays and water penetration.
So, are they practical? If you choose the right material (quality hardwood) and accept the need for occasional upkeep, then absolutely. They offer unmatched classic beauty and can be incredibly durable. If you want a truly zero-maintenance option, you might consider alternative materials. But for that perfect, natural look that only improves with age, a well-chosen and cared-for wooden bench is a practical and lovely choice for any park or garden, season after season.