Share your stories about running a node, mining rig, or stake pool!

I am super curious about putting some extra cash and a spare computer to work if possible. Given the wide differences in cost, expertise, and equipment requirements, I wonder if some of you experienced redditors have stories or opinions to share about mining or running a node or pool. I'd love to hear any and all of the sorts of things listed below:

• Which coin or token?
• How hard was it to set up?
• Did you make money?
• Running costs?
• Strange occurrences?
• Would you recommend the experience?
• Did you get slashed or have any losses?