> Are you all really that sick?

Well, no. These are averages. Obviously, some people take more sick days than others; e.g. women with severe period pains might take days off each month.

> Shouldn't the availability of lots of sick time and your "superior" healthcare system decrease your illness levels?

Sick days are not just for "illness", so they aren't an indicator for overall health.

> Doesn't seem to make any sense to me.

I could make a snarky response about US education or something, but instead, I just want to point out that I find it strange how people in bad situations often defend their circumstances, rather than trying to change them.