Oh, boy, is there some misinformation out there....
Starting with the last first:
Yellowbelly--So sorry, but to fly a glider (sailplane) you still must possess a pilot certificate, either Light Sport (if the sailplane is of that category) PPL, Comm, etc. You do NOT have to possess a medical certificate, even, as you say for a motorglider, BUT you still have to self certify, according to FAA rules, just like for Sport Pilot rules.
Above 18,000, be careful, that's class A airspace, and the airplane has to be appropriately equipped, etc,
a64,
The courts have said that if you are a pilot, it is expected that you know the rules set forth by the FAA. That's why the FAA requires ground training and a written test. If you took the test 30 years ago, nevertheless, it is expected that you must keep up on the rules. That is one reason we're expected to satisfactorily complete a Flight Review every other year, yes--even in light sport.
No court in the land would accept that you knowing the rules to operate an airplane legally is an "unreasonable" requirement, or that a reasonable person shouldn't have to know, understand and abide by those rules, particularly the rules on medical certification. Try that one in court, and you'll wind up owing Uncle a lot of $$$ and you'll get sick of attorneys.
Everyone here seems to forget that when you fly an airplane, you often operate OVER other humans, houses, etc. Many of us also carry unsuspecting and maybe even innocent passengers with us. Kill someone on the ground or a passenger, or just hit someone's house with your airplane, and I can almost assure you that you will be sued for everything you ever had, and will have. As in the case of the fellow recently who was charged with vehicular homicide, you may go to jail as well.
As the man said, if you have insurance, and you don't have a medical, OR you simply ignore the medical self certification regs, your insurance is invalid, and you're wasting your money.
I understand that it is difficult for many folks to insure in the LSA class, some of which may be due to medical considerations, I don't know.
The example of a crop duster operating without a medical is pretty far out. Those folks have to possess a 137 certificate, they have a POI, and there is some oversight. Same goes for liability. Drop an Air Tractor on someone's house, fly into a wire (and that happens a LOT) and you will be talking to someone. No medical....? Pretty bad idea.
I'm not about to suggest that there are not people out there flying without medicals or licenses. My point is...if you are going to do that, just be well aware of the risks and potential consequences.
Do you have any financial resources? You won't when they get done with you, if you screw up.
Yellowbelly--the recent group of pilots who got caught by the FAA and punished were in two groups: Those who'd had DUI's and had not reported them on their medicals, and those who were claiming a government disability based on a disqualifying condition, but who failed to report those conditions on their medical applications.
Both groups were punished civilly by the FAA (substantial fines, plus loss of all privileges) for falsifying a medical application. Next time you go for a flight physical, READ the fine print on the medical application--its' pretty clear.
MTV