we observe its effects every day. is that not good enough for you?
Please clarify what we witness? I am asking because you are making many claims, ALL of them need to be verified.
we witness that we are able to cross the equator, that we are pulled towards the earth's surface, that the sun and moon illuminate the earth in certain paths, that the moon is bright, that stars exist... are you denying any of that?
if you are intent on pushing your theory as preferable, when something as fundamental to it as gravity baffles even the most expert of scientists, you need to make a start at denying these observations. unless you can do that, my model is simply better.