Peter, the definition is hardly mine...
http://dictionary.reference.com/browse/parasite
[Your description of me, on the other hand, is entirely your own work.]
The poor are not parasites however. They have long been bred and readied for their position in a life, itself defined by others.
The poor are farmed, much as ants farm greenfly. Alas, perhaps because of the NHS, the poor no longer die off as quickly as hitherto.
You must get over the idea that your money is yours and that taxation and social security are theft of your money from you.
If ever the thought of ridding the world of the poor were to manifest itself in action, action would be taken, not as at present with a mere mouthing of the correct way forward:equality of opportunity etc., but with the supply of worthwhile work.
Unemployed people are detritus only because it suits people who speak as you do to treat them as such. Who in his right mind sends his horse to the knackers yard after each journey?