No support from extended family

My inlaws are horrified that I'd like a vbac. To the point where the ones that helped with my first child are saying "if you have a vbac, you won't need any help this time." And "a scheduled section is so much easier, you 'need' to do that."
Wth?! Isn't this MY body, MY baby? Why are they trying to make things difficult for us? 
Any responses on how to deal with them?