Negative - Так и надо : you are to blame - why removing pronoun? is it for the purpose of the song?

Negative - так тебе и надо : it serves you right (similar meaning)

Positive ? Так и надо идти : Way to go! Or is it patronizing? like this is the way to go son, you don't have a choice.

Could I also use any other verbs like Так и надо говорить Так и надо влюбоваться Так и надо водить машину


спрасибо!