I notice that you have added in the weasel word "physically", thus modifying your initial claim that space can't be bent, period.
Do you accept that the theory of relativity models spacetime as a curved manifold, and that the curvature is the result of mass and energy in that theory?
If you do, then you accept that space can be curved, at least in this model.
Now, if you want to assert that spacetime, as described by the theory of relativity, is not "physical" then that's fine, as far as it goes. But then no scientific theory is "physical" in that sense. All scientific theories are ideas, not physical objects. So, of course ideas can't be "physically" bent. Nobody disputes that. Nobody can physically grab onto an idea and bend it.
So, congratulations on stating the bleeding obvious, river. Well done, you!
This doesn't help your original claim at all, however - your claim that gravity is somehow caused by rotation. You have done nothing to try to support that claim, despite asserting it repeatedly in several different threads. This thread is not the place to discuss that silly claim, however, because it is entirely off topic here.
Generally, though, you are skating on thin ice, river, by continually making pseudoscientific assertions that you won't even attempt to support with evidence or argument. You've already got yourself excluded permanently from posting in our Science sections. You're on the verge of getting yourself banned from the entire forum, permanently. Tread carefully.
