Rechecking every course from the start" sounds like the worst part. Was the line just old and rotten, or did something put unexpected tension on it? I'd be scared to trust any of my other lines now.
Ever find yourself staring at your gear wondering what else is about to give out? That sudden failure makes you question the history of every rope and carabiner, stuff you've trusted for years. It's not just checking for wear, it's like your brain starts hunting for hidden weak spots you never thought about before. Once that trust is cracked, every climb feels like a gamble until you rebuild it piece by piece.