Spammers - an analysis of one of the lower forms of human existence

I never understand the logic that drives the mixture of morons, cretins and complete imbeciles out there to send spam emails.
In the past few days there has been almost a cancerous disease in the spam queue of my mailbox. Idiots seem to think that it is amusing to send the same junk mail advertising "potency drugs" over a thousand times with an invented name, preceded by the abbreviation "Dr" (for doctor). Even if you were so stupid as to be interested, surely you would be put off if they sent it that many times! Why bother sending this trash? It only serves to annoy people.
This is though not the worst type of trash out there (though it annoys me more than the dating agencies and 419 scams, which you cannot take too seriously either, and arrive less frequently).
The worst stuff comprises the phoney job offers. If you are unemployed (and given the current economic crisis, there are a lot of people in this unfortunate category), the chance of a job opening gives a ray of hope. That such hope is generated by some phoney email, and is bound to result in disappointment, strikes me as an extremely nasty form of cynicism.
I would personally like to see the people who send these things out publicly excoriated, and incarcerated in some appallingly dreadful conditions. Somewhere where hope was the last thing that would enter their minds for at least a couple of years. That would be the only satisfactory reward for their cynical behaviour!