Yes, it definitely is a classic. I agree, it helps viewers understand the true message Ibsen is trying to send. I feel like if forgery was a crime back then, then that was surely a crime. But I believe, (as a woman growing up in the modern generation) that Nora leaving was a more than okay thing to do if her happiness just didn't lie with her family and husband. How unhappy could one be to leave their own children? She was wrong for the lies, but she was stuck in a rut you could say, and got herself out.