Unemployment = Unemployable?

I am on my fourth round of unemployment since 2007 and I'm getting a little paranoid that the job market is out to get me.  Layoff #1 happened in 2007.  I survived with contract work until Layoff #2 in 2009.  Then I got fired in 2010. I was laid off last month. It feels like every time I get myself a full-time permanent job, it slips away.  

I cobbled together a semi-life with contract work which is apparently a resume killer.  I'm sick of answering "Why so many contract roles?" or "Why didn't they hire you full-time?" in interviews.  There's no way to be able to clue in the hiring people about what the job market is like. Does anyone have a good way to explain contract work that gets through interviewers' skulls?  I try to spin it as I got a variety of experience and ERP system exposure.

I'm hoping my coping skills will improve when the sun is out a lot and it warms up.  

Yeah, these scumbags should be on the other side of the desk, and one day they will. They're not immune to being unemployed long-term. And the bad karma of them thumbing their noses at the unemployed, and telling them to just get a job, will get them 3-fold!

You're doing the right thing in putting a positive spin on contract work. After all, how is one person supposed to get the laundry list of skills these supposed jobs require without working several different assignments? Then they have the nerve to say they can't find someone with the skills they need to fill the position.

Perhaps if they stop trying to hire 1 person to do the work of 3 people, they may find people with the skills to fill these jobs.