Job security is a myth, sure. But that doesn't mean that contracting carries the same risk; the risk is greater.
Meanwhile, as an FTE, you get vacation time, sick days, bonuses, and company purchasing perks. You get a much better insurance coverage than you can afford to get privately.
* As a full time employee you might get a severance package, if the company doesn't feel like dealing with you, but it's completely optional.*
I've been around for quite a few years now and have never once heard of a company not offering at least a month's severance. Technically, sure, it's optional, but it's also insurance: they don't have to worry as much about you suing them if they pay you a little on the way out.
* I'd rather be unemployed (and motivated to find a better deal) than working for less.*
That's your choice, but I have to wonder about your math. What are you paying for health benefits, and what would they be as an FTE -- and how much better would they be? I bet it would make up the difference. What about paid vacation? Sick days? Holidays? You get jack-squat for those as a contractor.