Rubbish response

I've recently been diagnosed as autistic and it's been an up and down experience since I found out for sure even though I was certain myself before it was official. I'm a man with kids of my own but I thought I'd share the news with my parents to let them know why I've struggled in life but all I got was ' oh right at least you know, how are the kids?.' These people have been less then supportive throughout my whole life and that's putting it mildly. Should I just cut them off now because I was never happier then when I didn't speak to them for years.