If you develop an ear for sounds that are musical it is like developing an ego. You begin to refuse sounds that are not musical and that way cut yourself off from a good deal of experience.
The first question I ask myself when something doesn't seem to be beautiful is why do I think it's not beautiful. And very shortly you discover that there is no reason.
If you think something is boring, try doing it for two minutes. If you still think it's boring, try it for four. If you still think it's boring, try it for eight, then sixteen, then thirty-two, and so on and so forth. Soon enough you'll find that it's really not boring at all.