WHY DO KIDS HAVE TO GROW UP?!

My nephew turns 8 today and my nieces are going to be 5 this year. I know my sister isn't ready for that. If these kids don't stop growing up I swear I will KILL MYSELF! STOP GROWING UP!!!!!! 😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭 STAY LITTLE!