I have never heard of the cities in TEXAS.
I am happy living in West Texas. Yes the mosquitos are big and nasty and I know that some parts of Texas are not that GREAT. But guess what for those of us that return it is a choice.
I really enjoyed living in College Station some years ago. Texas is beautiful (for example, the wildflowers along the freeways near Austin are unforgettable!) and many/most Texans are great, salt of the earth, realistic and unassuming people that I can easily relate to. Sky high property taxes and the relentless, scorching summer heat are reasons why I probably will not retire there, but I can sure see why you like it there.
As some of the posts say it is nice to have someone to talk with or in some cases a shoulder to cry on. Living in a place where you do not know anyone could be hard if one was to get sick, be in the hospital, lose their home, etc.., etc....
It's nice to have "roots", and I wish I had them like you do. Never have, since life just hasn't worked out that way for me. Moving to a place where you do not know anyone, you really have to leave your complacency behind and exercise your skills in reaching out and making new friends. I have moved to locations where I knew no one many times, even after I was 50. Although I am normally an introvert, I know that shyness is a luxury I cannot afford when I am new in a community. Maybe I don't FEEL like being a "joiner" and spending a lot of time outside of my house, but it is necessary to be around people to get to know them.
I have experienced all the scenarios you fear - - being sick, in the hospital, losing my home, needing a shoulder to cry on, etc, while living in a community where I knew nobody. I was even pregnant with my only daughter in such a situation (my ex was in the Navy and on Westpac at the time, leaving me pregnant in a dubious part of San Diego two weeks after we got there). These experiences are not pleasant, but also (believe me) they are not the end of the world! Ultimately they bring you a certain self reliance and strength that you may not know you had. Also they are very temporary - - being in a new location for a few months, if you have made some effort you will have a few new friends so this is really an issue for the first few months after moving.
One of my great lifetime desires is to someday, live in a place where I have long time roots like "other people". I am nearly at that point in Louisiana, where I have lived for 11+ years, and where I have made herculean efforts to learn about the community and find my place here. While I really DO understand your feelings and why you say these things, I also do not feel constrained by the same issues.
I have only heard of one of the "towns" in Louisiana. Arabi is actually a neighborhood contiguous with the lower ninth ward of New Orleans, and though it was once nicer, the Arabi of recent years is not my idea of a very good neighborhood - - I would not choose to live there, anyway! Still, I think the list is fascinating and broadens one's thinking.