How can a consumer economy possibly be sustainable? Some consumer economies

In 2017, the United States household final consumption expenditure (HFCE) is $13t, which is 68% of its GDP.
In 2017, the United Kingdom has a HFCE of 1.7t, which is 66% of its economy.
In 2017, Hong Kong has a HFCE of 228b which is 68% of its economy.

Source: Wikipedia
What is consumer economy?
A consumer economy is an economy driven by consumer spending unlike production exports like industrial economies.
While I fully understand how consumer economy works in microeconomics (basically everything is the same and perfectly normal) and noted that US is an exception to the norms of international economic norms (since it's the owner of USD), I would like to be enlightened on how a consumer economy is possibly sustainable in terms of balance of trade, …aside from waiting for miraculous FDI injection

How can I continuously consume without running out of money&amp;resources? (assuming this nation is not a Juche/Soviet)
Does this not eventually cause a devaluation of your national currency if you keeps on importing more than you export?
Is it OK for me to conclude that consumer spending is bad, we should save as much as possible like Singapore, China and Japan and focus on exports to make as much incoming money as possible?
GDP is, by definition, basically only consumption and government spending.  That's why you see consumption reported as such a high % of the overall number.  Gross Output (GO) is a more comprehensive measure of economic activity, and on that measure household consumption is closer to 35% of the economy.  A "consumer economy" isn't one in which most economic activity is in the form of consumption of imported goods &mdash; there is plenty of production going on in such countries, as well.  More production than consumption, in fact (since many of the goods produced are used by other businesses, and often not counted in GDP figures.)