Not incredible growth;
exponential. On the
7th March, the UK had 200 cases and I forecast 40,000 by the end of the month. We're now at 8,000, meaning an average 26% growth each day. Thus,
worse than my prediction two weeks ago, if unabated, that means 50,000 by the end of March, and something like the entire UK population by the end of April. If 5% need hospitalisation or they die (but will recover with hospitalisation), that's roughly 5% of 65 million == 3.25 million people dead by the end of June simply because care can't be provided to get them through it. In the UK alone. Extrapolating to the whole world, that'll be 325 million dead by about September. A more optimistic prediction is only 1% will need hospitalisation to recover...and that'll thus only be 6.5 million dead worldwide.
And then you have everyone else, like those with pneumonia or cancer or needing surgery, also not getting adequate treatment and dying or having their lives impacted massively.
Compare that to your other diseases and see why every single scientific advisory board in every single country is giving the advice they are, and why every nation is looking at lock down to stop the disease progressing so fast.