Proof Mind is Fundamental and Matter Doesn't Exist

[bennyboy]

... because that would be question begging. you can't use experience to explain why we experience.

This ^

It doesn't prove the OP thesis, but it certainly proves that the opposite view cannot be supported through evidential means. You can't say, "I experience a bunch of stuff. . . therefore objective physical reality," no matter what it is you experience, or how deeply you think about it. And, unfortunately, we have no way of interacting with anything but through experience.