Running a profitable lightning node is a pipe dream. It's like dreaming of being a rockstar.. Possible, but so few people succeed at it.
Mostly, people should be setting up their nodes so they have plenty of LN liquidity for when fees are high, as opposed to trying to make a profit off routing. The system is quite literally built to be a race to the bottom on fees
why does a node help with liquidity outside of just having a lightning wallet with sats?
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Lightning wallets are just managing liquidity for you and you'll often get surprise high fees depending on what you're doing.
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