Was there ever a good reason to worry over global warming?

Was there ever a good reason to worry over global warming?

So, now that the global average temperatures have stagnated over the last 16 years (21 years as of 2018), is there still any cause for alarm? I suppose there would be if the long-term temperature trend were rising, but it is? How about the last 100 years, the last 1000, 10,000, 100,000, million, 100-million or even the last 4.5 billion years? What has the trend been, in general?

Was there ever a good reason to worry over global warming? Was there ever a time when the climate did not change?

When did the climate ever not change?
The red part of the trend line is based on data collated by HadCRUT

Legend of acronyms used for the trend lines in the preceding graph:

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Well, why don’t you take a look to see whether you can find evidence of a stable climate at any time in the past? (h/t to WUWT.com, Crowdsourcing the WUWT Paleoclimate Reference Page – Continued,Posted on March 30, 2013 by )

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