You are making a big assumption about reality. It doesn’t seem to be consistent with all we know about it.

Besides, if reality exists only when I’m paying attention, how do you explain that while I’m asleep others are paying attention?

And how do you explain machine-gathered records of the past, like movies or photographs?

And what do you make of scientific theories that tell us, backed by empirical observations, that the past stretches for about 13 billion years in this universe.

Isn’t it simpler to assume that the world exists independently of our minds? At the very least it’s a bit less of a narcissistic view of reality…