No one really knows. At this point we can only speculate and look at the historical events and learn from them.

Politics aside, we may be able to see at least to the next 15-30yrs (maybe more) of normalcy unless some major world event happens e.g. a widespread disease/epidemic, WW3, or a comet hitting the earth. Of course there is some form of decline in society, and we can experience another recession or depression, but that will not necessarily turn the US and other 1st world countries to widespread chaos.

The best thing to really do is to prepare as much as you can and be self-sufficient.