I spent two years collecting points so I could fly anywhere for free. The free flight left at 5:40am, connected twice and landed in a city I’d chosen only because it cost the fewest points. The hotel, also on points, was next to a motorway. The fees and taxes came to more than a normal ticket. My colleague went to the same place on a cheap flight, on a whim. She had a lovely time. I had a spreadsheet. I’ve already started collecting for the next one.
Technically free. You paid with two years of your life. The airline thanks you for your loyalty, which is their word for not noticing.