I would imagine that the majority of us will be pottering on, much the same as we are now and we were 10 and 20 years ago.
What many people on this site fail to appreciate is for many people, not much changes. Boom or bust, doesn't make a lot of difference to a lot of us. Single income family, few kids, small house, drive a banger, my life hasn't changed much in the last few years. Might have afforded a holiday last year that I won't this year, but thats about it.
The likes of us don't have any shares, or investment properties, or large debts. We just quietly get on with it, heads down.
In 2020, we'll be doing much the same.