As said, middle-class people easily adapt to every living condition. The ongoing economic situation around the world has made people keep their needs limited and move towards saving more. We don't know what could happen tomorrow. Already, more countries are struggling because they aren't able to support their people by providing proper food. As mentioned, the gap between the rich and the poor keeps widening, which itself is an indication that the system isn't functioning in the right way.
Those who belong to the middle class will of course be able to easily adapt to every situation they experience, because when the income they earn is difficult to meet their needs, they must be able to restrain themselves by not forcing themselves and must be able to endure what is available.
Saving is of course very important, whatever income they have, they must be able to save a little after meeting their needs so that they can save and it will be very difficult to survive in these uncertain economic conditions, so having savings will of course be able to help a little in dealing with conditions. The economy as it is today and the gap between rich and poor will certainly continue to be a problem in society and will be difficult to control if the economy does not improve.