life without constraints

People tell me freedom is living life without restraints. However, if I see around then almost everyone has given up some degree of their freedom. Many have even forced others to give up their freedom (under the pretext of option or by persuasion)
Cavemen have given up their freedom for civilization, law and order. Marriage constraints our personal life. Home mortgage EMI takes away our financial freedom, employment bonds/service contracts takes away our professional freedom. Why is it that everyone talks so much of freedom but they part with it so easily? The moment we plan, commit, agree to something we tie ourselves up and give up our freedom.
Hence I think freedom is ability to choose one’s constraints.