If you sit and listen to some friends doing a tarot reading or reading astrology the process itself drives meaningful introspection, and it helps people actively think about their recent behaviour and what they want. That’s a healthy thing to do and I can understand why people find it valuable.

The actual content I think is full of self-affirming biases and wishful thinking, but it’s more of a backdrop.

As long as someone isn’t reducing themself or people to their sign or whatever it’s mostly harmless, and without astrology I think there would be something mystical to fill the same void (crystals, “energy”, psychics, religion).