It's not like I'm painting a rosy scenario Ken! All of your concerns are warranted. Trouble lies ahead because of the many things you mentioned. And we should be taking precautionary steps.
But a dollar collapse is low on the list of immediate concerns. There's a better chance that your money will get locked up, or steadily lose its buying power (not collapse), or that the availability and distribution of food and tangible items will be disrupted, or that the gravy train for those on the dole can't be met and it will cause social unrest that could turn violent. The dollar will likely be in relatively short supply and strong demand as these things begin to take place. Only when the gov't accelerates the dollar creation program to meet these needs will it start to become at risk.
People think the dollar printing is high now, but it's really only at a few percent annual rate compared to the total money supply. Although long term harmful, they are able to mask this in the short term. When the handouts begin to overwhelm the system, then you'll see some serious printing, and some accelerated dollar damage (potential collapse) rather than the continuous erosion we see now. But this is not within a couple of years. More likely it's 5-15 years down the road. Other trouble will surface before that.