Space Travel Realities

I am not scientifically credentialed but have an interest in space exploration. I often harangue politicians and NASA to do more and better in that regard. I wrote a brief editorial about why I believe space exploration budget allocations are less than optimal and am wondering if my article contains any gross inaccuracies (that would render my argument meaningless). I would welcome any input from those knowledgeable in physics as to whether or not my argument holds any water. The article can be found at:

http://www.opinion.propertyopportunities.com/propulsion.html

Thanks in advance for your thoughts.

Mark