Why do people act so disgusted when you tell them you’re using cloth diapers

My SO’s family is supportive in anything we decide to do why can’t my family be more like his? It’s so embarrassing. When asked what kind of diapers we’d like we told everyone we’re going to use cloth and my family immediately started with “eww why” comments or “that’s gross” tonight my mom called and asked what I was doing. I told her we’re looking at cloth diapers online. Her response was “ugh don’t start talking about that. I’m going to buy luvs for my grand baby” 😒 like it’s fine if you don’t want to buy cloth diapers, we don’t care and aren’t expecting anyone to but why the rude comments?!