Birthing class?

Brittany
FTM here and I honestly have heard that birthing classes are a waste of time and money. And I honestly don't really see a point in it, especially when hubby and I both work and get off right before 6 come home and just relax. But hubby's grandmother informed us that we need to take a lamas class (idk if I spelt that right) and told us she would pay for it but I've just heard that it's not worth it. Any advice?