Rant: Bedtime is actually losing my mind

We do the whole routine. Bath, brush teeth, story, songs. Takes about an hour with two kids (4 and 6). And EVERY SINGLE NIGHT one of them needs water, or has to go potty after we've already done potty, or suddenly remembers they're scared of the dark. It's the same thing every night. I get it, they're stalling, but I'm absolutely exhausted by 8pm and my patience is paper thin. When does this get easier?