The agruement against having a compulsory government is pretty straight forward. Who can be trusted to decide how you should live your life. Government ultimately will be that decision maker.
While leaders support the controls you support, it is easy to favor government.
Government decides what you can eat, who you can marry and what you can buy. As long as government policy favors allowing the things you like, you have no problems supporting it especially when it is trying to stop the actions you feel people should not be allowed to do.
But governments change and new people take over and as long as the leaders believe they have the political support, there is nothing to stop them from opposing the actions you like.
Even if government is limited to just protecting people from everyone except government, it is a monopoly. The basic principles of economics teach us the monopolies will tend to under produce. A compulsory monopoly will tend to overcharge.
This means that government security will tend to be under produced. In fact, anything that the government does can be better done in the market.
In the free market, companies compete to drive down prices and if you do not like the quality of the product you can purchase it somewhere else or even provide it.