Brutul tech interview processes burning me out

I've been interviewing for a while now, and I just went through a 5-hour marathon of coding challenges, system design questions, and behavioral interviews. By the end, I felt like I was being interrogated! Why do companies think this is a good way to assess talent? It’s exhausting and honestly feels more like a game than a fair evaluation. I'm so tired. There's so much competition and I often get to the last round which takes a shit ton of work but then get rejected. :(