Because it is true you must say it. Thats a most important principle.
If you can't say what you say you know as truth, you really are a gutless sort, aren't you? In any case, I've found that if you'll just say it, boldly, without apology, it flummoxes a certain class of people and I find it rather enjoyable to flummox them.
Indeed. Flummox on, then!