If something bad happens, people who had warned that it was likely often say, "I don't like to say it, but, I told you so!"
Why is it that one is supposed not to like to say it?
Is it perhaps that we don't like to admit it when we were wrong, especially when we were warned that we were wrong? Are people who make us realise that we made a predictable - almost wilful - mistake unwelcomed because of that fact?
The honest truth is that we ought to listen to those who told us so. They saw it coming – they will be better at heading it off, next time.