Do I need to grow up???

My parents always say I'm already 21 years old and yet I still behave like a young kid...... Thay say I don't seem to grow up..... always so crazy..... hahaha.... even my younger brother says I'm childish..... Sandy also asks me grow up soon..... Do I really need to grow up??? I guess so.... or else if I keep on like that.... people will say I act cute right??? However, though I can change my behaviour..... I don't think I can become independent so fast..... cuz my mum had been doing everything for me all these while..... from ironing my clothes for me every morning to helping me paying my hp bills....... everything she does it for me...... I don't even cook instant noodles myself..... oh no!!! I'm really over dependent on my parents..... So I think I better put off my plans of growing up till next year..... or maybe the year after..... or the year after.......