I used to have your same opinion. I had candida before and I got well adn I never saw anyhting. Of course I did not know to look. In any case About 6 months ago I thoguht it was the most absurd thing I ever heard. My understanding was that is was microscopic. But I was WRONG.
All I can say is that you start feeling a little different when you see it come out of your body. What I nknow for a fact is that I had candida before so I am very familiar with the symtpoms, I had a candida test and my results were sky high positive, and now I am periodically passing these large amout of it and most of the time jsut small little strands and the more that comes out the better I feel. My thrush has disappeared and I am feeling a million times better. So the proof is in the pudding. That is all I can say.
I am sorry you do not believe it. It was my resistance that kept me sick so long too. I had to learn to open my mind to possibilities which I did and it is yielding me huge results. I hope you will get there also.