Because I did. Belgium's healthcare was no bueno for a foreign exchange student just looking to kick a cold.
Au contraire, I go to the doctor and get medication so easily prescribed that I'm afraid the doctor is to nonchalant ... (and always without an appointment, maybe sometimes 20 min wait)
Edit: regarding Sinus infections, quick google search shows that the "apotheek" carries and sells medicine for this.. so maybe you just had bad luck/was misunderstood?
I hail from a country with the lowest number of practicing physicians per 1000 inhabitants in the EU and I still can get an appointment with a general practitioner on the same day.
Specialists are of course a different matter but again - lowest number of doctors in the EU. They're all in Norway now.
I thought that was pretty good, because scheduling our last an annual check up was much further out.
I've definitely had to wait 2 weeks to schedule an appointment with a specialist in the US.
The "best" healthcare in the world, according to some talking heads.