Also opinions and perspectives change. I was quite liberal, politically, in my 20s. In my 50s I'm quite conservative, though I would never have thought that could be the case when I was 22.
That seems to be fairly common. School curriculum tends to have a brainwashing element to it. Also, each generation thinks it has all the answers. I remember discussions with older relatives, trying to convince them of something. They turned out to be right more often than not.
