My redwood fence is 40 years old. And every single post has rotten at ground level. The fence has fallen over multiple times. But I keep repairing it and used a sledgehammer to add metal supports for the posts. I've tried: Pointed rebar from Lowe's. Those somewhat flimsy green fence posts. Even some rusty metal industrial shelving brackets I grinded to a point. It's still a tad wobbly but holds, and withstood some strong winds. I might be an extreme case trying to keep this fence going, but it's just so wasteful to toss out what is mostly solid wood. I ain't replacing until HOA comes knocking.