I love threads about personal finances. I just find it so interesting to learn about salaries of different jobs, cost of housing in different areas etc.
Though, invariably, they end up with a mix of "I earn £4,000,000 a year and can't afford more of a holiday than a week in the eaves of an abandoned public toilet in Skegness every January" vs "my husband earns tuppence a month and switching from branded cola to Lidl's version means I now live on a yacht".