If you can’t do the long term stuff others have been mentioning here is a bit more short term stuff:

• Make sure you have bottled water. Ideally a few weeks worth per person in your household. Remember that cooking uses water too.
• Medication for as long a period as you can reasonably cover for the people in your household
• potassium iodine tablets to protect the thyroid in case of nuclear fallout
• Canned food
• remember your pets need stuff too if you have them
• in case there is an infant involved baby formula, diapers and other baby needs

More long term:

• look into MeshCore or meshtastic for communication
• radio with a hand crank + spare batteries
• medkit with bandages, tourniquet, etc. Also learn how to use it.
• we have 3 ways of heating our house: fireplace, electric and gas. I’m sure that won’t be possible for everyone but the point is diversification where possible.

As long as all parties involved are consenting adults it’s none of my business what they are up to. Except that prostitution should be legalized in a way in which they get equal rights and protections to other professions. The only reason it’s illegal in many countries in the first place is likely based on religious Puritanism, which I do not think laws should ever be based on.