Riv, I agree with you that if you are not too bothered by them, you should leave them alone. Removing them does not guarantee that they do not return, however, so far, i'm glad mine didn't. I had lived with mine for many years, thinking that laser was the only way out. When i found a solution in the elec current method, i was very happy. Mine were a combination of milias and oil clogs, though it seemed that oil clogs are the majority. They are just extra skin on the surface of the skin. I remembered i started getting them when i started on drugstore eyecreams and were applying way too much that time. Some ppl are just exceptionally prone to milias whereas others don't.
If you milias are about 1mm or more big, and not many, zapping them away is a good choice. However, for the many other small ones, they are hardly visible to another person's eyes during eye contact, so they are fine to leave alone.
The process is not too painful, slight feeling of "electrocution" which is ok to bear, but really it's all up to individual preference.
I sure do hate those milias