> It doesn't make sense to me to discriminate against people with more experience. Can someone explain it to me?

They keep saying all the wrong things, like "no, I won't go on call, that wasn't in the job description I applied for", "sorry, but I won't take on the extra responsibility unless you give me a raise", or "I've been down this road before, I'm not going to work weekends because it's not going to significantly speed up the project and I'd rather be with the wife and kids".