[rhubinak]

They are man-made, mostly non-biodegradable and mostly non-recyclable. Which means they are thrash. I'd rather avoid ingesting or creating thrash.

[sfn42]

They are microscopic trace amounts of trash that until recently we didn't even know about.

They are unavoidable, doesn't matter what you eat. Fish, vegetables, meat, whatever you can think of it has microplastics.

If you want to expend a bunch of energy trying to minimize it go ahead and good luck. Personally I don't see the point.