There are lots of good reasons that a good citizen would put the nation above him or herself. If someone does this of their own accord (like the examples I provided in the reply to Coyote) are they a fascist?
Am I a fascist because I have chosen not to have more than two children because I put the nation, my planet and my species above my own rights and desires?
I think what you are doing is identifying, correctly, that it is in your own interest to not have more than 2 children. I made the same decision. It is in our children's interest and in their children's interest. This is fundamentally different from someone else telling you that you may not have more children because it is against the law, as NoNukes points out.
This is the strength of democracy where the motivation remains with the individual. It will always be more robust and sustainable than any kind of top-down system even though you have to accept that some people will be 'wrong' on certain issues and have the right to be so. It is the very sloppiness of the system that makes it work.
Of course we need restrictions and police to enforce them but they have to be backed by popular consent or it wont work. The only hope lies in education but it has to be voluntary. You cant teach anybody anything that they dont want to learn. If we are not smart enough as a species then we are fucked anyway. Authoritarian efforts at survival will only make our demise that much more unpleasant.