It’s a little like democratic elections. A single vote has negligible impact, but all those single votes combined? They have the power to make or break the future of a country. An individual decision not to use plastic is not unlike that.

Awaiting numbers as to how much plastics in the water which comes out of my tap is from washed microwaved plastics.

not sure where you got this part from, but your entire argument depends on it being true, and it isn't

reminds me of the people who said facemasks and vaccines do nothing (meaning literally 0% effect) because they weren't 100% perfect virus force fields

And you claim that it isn't true makes no sense either since this isn't a claim about a fact that can be true or false

> you claim that it isn't true makes no sense either since this isn't a claim about a fact that can be true or false

actually, it makes total sense, because your factual claim was that, for a nonzero number, "you've achieved 0", which is obviously wrong. It's simple logic, friend.

maybe try tying your post back to reality, where the effect isn't actually zero? Fill in the analogy, since it's clear we can reduce our microplastic exposure a non-zero amount (your personal opinion that it's not enough for you is what is irrelevant here)