Why?

Why hate a program very much and criticise someone for watching it? We aren't all the same, thank god. Why do people change when hanging out with certain persons? Why be mean in order to feel more selfsecure than the other person? Why do some people talk about shallow things with some but not all.

We're all different but I've noticed that some people just change all the time. They have 50 different persons inside their shell and I can't get a grip of them anymore. It's awful, horrible. Common be yourselves! That's the way I like a person. Not someone who is constantly changing.