RTerroni,

It is not any easier to get SSI, than to get SSDI. If you are not yet 65, you can only get SSI if you are disabled. That means you would have to be just as disabled to get SSI, as you would need to be to get SSDI.

There is one sense in which you might be right. If you haven't worked long enough to qualify for SSDI, then you would be limited to just SSI. There is no work requirement for getting SSI. It is based on how poor you are. But you do have to be either elderly, or disabled.