Why is it rare for bullies to be genuinely sorry?

I find this rare. I've had a hard time during my younger school years. It all stopped in HS. I've only received two apologies but they don't count at all.

The 1st apology was in 7th grade. I hit the girl back and we were going to get suspended. She didn't want to get suspended, expect me to just forget about it and all of the sudden the waterfall and ''boo hoo, I'm sorry (my name)''. Yeah right, the typical ''Sorry I got caught'' apology''. This felt like an insult to me and I didn't accept her ''sorry''.

The 2nd apology was in 8th and these two classmates knew they would never see me again. My parents were moving to another city. Just the day before and even the whole morning and practically whole afternoon (until telling them I'm moving), they were having fun bullying me. So just because you'll never see me again and miss bullying me, you're suddenly sorry.

But seriously why is it becoming rarer for bullies to genuinely apologize? Apologizing because you're about to get suspended or because you're told they're moving doesn't count.

Updates
+1 y
I actually feel more insulted when it's one those fake or last minute apologies. I prefer no apology than a fake one. It's not sincere, doesn't come from the heart and there is no change; you're still shitty person. You haven't learned.
Why is it rare for bullies to be genuinely sorry?
Post Opinion