If you are seriously worried about your potential ability to retire, you may find some interesting videos on retiring in places like Ajijic, Mexico, on Lake Chapala; Atitlan in Guatemala; and San Miguel De Allende, Mexico. There are fairly large expat communities in those areas made up of primarily Americans and Canadians, also other's from other countries. It is safe in those places, you don't have to speak the language (though it would be good to learn), and you can live well for a fraction of what it costs in the USA. There is also good medical care available for relatively little. But, look for yourself, you may be surprised. And many of the Americans went down there because of the political sh** going on here. Go on YouTube and check it out. Just put in Ajijic in the search box.

A complete collapse of the U.S. economy into a situation such as currently happening in Venezuela.

Same as @AMGT, if something happens to my kids I am out...

I think it is unlikely that republicans will be able to fuck up SS and medicare in any big way, simply because a large portion of their base are seniors. If they messed with it in a big way, they would in effect drum themselves out of office. Or, at least I hope so. I am losing confidence in the intelligence of the average Americans.

My biggest fear is that the current stock market bubble will burst, and the middle class will be too down trodden for any kind of immediate recovery. We are talking "Great Depression" or worse financial collapse. Teh biggest problem with "trickle down' is nothing trickles down, and the middle class has been shrinking since the 1980's. The middle class is our economic consumer bse. Once they are gone are past a tipping point, recovery takes more than a decade or longer, as was demonstrated by the Great Depression. If people can't afford to consume goods and serices, the economy falls like dominoes. That is my biggest fear...

Unless I start thinking about North Korea and nuclear war.

Things aren't much better over here. Without a lottery win (even more unlikely for me than most, as I don't play it) I don't expect to ever be able to retire - in fact, I think I'll probably have to work until I drop dead, and if there's still a state pension by then I'll be very surprised. Meanwhile, the Conservative government seems so determined to keep hammering the National Health Service that you have to wonder if the plan is to run it down so much that when they eventually abolish it people will say "oh well, it was crap anyway."

mine is too many humans fucking up such an amazing planet. how selfish are we?

Not being able to take care of myself as I age is mine. I did not raise my kids to care for me. I fear being a burden to them.

My greatest fear is that the damnable collusion between the Trump cabal, the Power-hungry evangelical leaders, the culture of greed, and the Republicans who are all too willing to sell us out could destroy out democracy.

I am not afraid of the future too busy NOW dealing with fearsome challenges like TrumpOLINI Kock Bros Ryan McConnell McCarthyism rapist popes corrupt US Sup Ct and ignorant voters who CANNOT count to 3

Yes Ryan fucking with Social Security, Medicare and Medicaid will attack my means of survival. Also fear piece of shit trump using his hate and bigotry to mold immigration policies in his effort to make US white again.

Mine has to be rampant ignorance, which seems to be increasing exponentially.