Here is an un-amusing anecdote about why I have no desire to retire in a tropical country.
My sister works for a non-profit in Guatemala. She ate an amoeba (she's been living in undeveloped countries for three years and this is the latest in a long string of parasites and stomach infections, despite being as careful as she can possibly be). She got medication, and it made her extremely ill. She has been in and out if hospital, getting wildly varying opinions, including completely invalid instructions to stop taking the amoeba medication since they can no longer detect amoebas in her (you have to finish the course of the medication and also do a course of a second medication, apparently). She is now waiting for a med-evac flight from her international health insurance, and if that is not approved, her Mexican boyfriend (relevant because he is a native Spanish speaker and able to advocate for her in the native language) will get his hands in as many pain meds as they will prescribe, and fly her to Mexico DF on a commercial flight, and take her straight to the Mayo Clinic in DF.
The hospital in Guatemala (in a city, but not Guatemala City) does not use gloves, has no sharps containers, and did not evacuate the building when there was an earthquake. My sister and her boyfriend evacuated themselves, everyone else stayed inside.
So, yes, she can live a life of luxury on 1000$ a month. But that comes wit some serious downsides.