I'm getting tired of this, but you deserve a couple of responses, Khh:

Quote Originally Posted by khh View Post
Would you say space exists? As in the normal three dimensions around us. Because you could argue that space isn't really anything. You could say that it's just something we need to make the physics come out, just the tool we use to measure distance. You could say that it's just the framework within which we can calculate how objects affect each other. But I'd say that space exists. At least as long as there is something within it.
Honestly? No, I would say that space does not exist, for exactly the same reasons as time, and for all the reasons you list. Just because there's stuff in it doesn't mean there is a substance there. Indeed, space literally means the absence of substance. I was going to mention that earlier, but I didn't want to get myself into more trouble.

So no, space doesn't exist either... however the discovery of the Higgs particle, and corresponding Higgs field, will likely change my mind on that.

Also gravity and electromagnetic forces can't be the same same regardless of the reference. When you move at a high speed the length of items moving at a slower speed actually shrinks (from your viewpoint). Since the forces are affected by distance, they should change too. Though to be honest I've never actually heard anyone explain exactly what happens with forces due to this effect, so I could be way off.
I never said gravity and the electromagnetic forces are the same; sorry if it sounded that way. What I did say is that gravity has been established theoretically and experimentally as a force (called "gravity," and not electromagnetic), and that there is plenty of empirical data supporting its existence.

Also I think it's a theoretical physician that would have something to say about that. Math doesn't really have anything to do with the real world, it's all just a logically coherent system we use to describe it
Math has everything to do with the real world; indeed, math is the language of the real world. In fact, the more advanced theoretical physics gets with its math, the more mystical it gets (ie, quantum entanglement). So it might not be a good idea to dismiss the math, and it might be an excellent life-choice to embrace it.