As far as I have heard from people that switched to private is that if you ever need to come back to public, this is hell on earth bureaucracy. All of them recommended a supplementary plan instead of switching to private.
That's mostly correct. Generally, the only way to switch is to be forced back into the public system. For example if you reduce your income below the limit for private health insurance.
Public is an easy choice. Private is a very carefully made decision that can be worth it for some people in some situations. The entire industry is incentivised to sell private insurance, but it's not at all a "better" choice, just a financial move that may work for certain people.
