I've gotten older and it's gotten harder to feel remorse for my bad actions.
Don't you feel remorse for anything?
I'm fine with it. I just don't care anymore.
You have to care at least a little bit if you are bringing it up! You can't feel completely good about being rude to people.
I really don't care about stupid things like that.
I just think it's normal for feeling remorseful for the bad things we have done. If you no longer have such feelings then maybe you should seek professional help.