I don't think it is governments job to make choices for you...I think it can be within the purview of government to restict the sort of choices you can make. Are you suggesting, for example, that we legalize the sale of heroin?
When it comes to freedom of choice and what ones we should be allowed to make and which one's government should interfere with my view is pretty simple:
You should have the right to make any choice you want up until the point where your choices have an affect on others.
So legalization of drugs is tricky. Giveing someone the choice to sell heroine in of itself does not affect anyone because someone else has to choose to buy it. Honestly I haven't decided on that one. Some drugs like marajauna I think should be legalized, but heroine is pretty bad stuff to say the least, so im still undecuded.