Just curious

M
I have seen a lot of posts lately based on jump starting labor. I was just wondering why a lot of women want to drink the tea (sounds like a cult ha!)  or have the primrose oil. If you are due in sept than you have about 4+ weeks left which is still time to grow your baby and make sure that he or she is a healthy weight and healthy in general. 
I don't plan on jump starting even though I'm miserable right now, I would like to go on time according to my doc that is 4 weeks. I went early with my first child. 
I know our due dates are calculated based off of our last menstrual cycle but that is only based on a 28 day normal cycle and I know for a fact I do not have that. 
Please don't think I am judging anyone, I really am curious why some ladies want to hurry this process up. Shit is gonna hit the fan soon enough lol! 
Good luck to everyone in their last weeks! Xo