I don't think they're being paranoid, they just have no idea how inflated their lifestyle is, and how much they are throwing away.
Why are they throwing away so much each month?
$300 a month in life insurance when they already have enough assets to live a life of luxury without additional income?
$350 in gifts
$300 in drinks
$335 for phone and internet (WTF?)
$840 on capital improvements (on a $310,000 home that insane, and must stop some day soon).
Going through their expenses it appears the could live of $3,000 a month with very little reduction in lifestyle. Which is only 1/3rd of their post retirement income - in which case it's insane that they are worrying.