What is the best way of telling them to butt out?

There is a polite way, Just sensibly and sensitively tell them you are not interested in children. If they balk, remind them they won't be doing the parenting. If they want something to play with they can get a kitten, too.

Parents can be stubborn and you are still young. Some people are not ready to have children and your parents have to realize that. It is hard now adays to raise children and keep a job when they end up getting sick and you have to always take time off work. Tell your parents that you are not ready to have children and you may not have them in the future cause you have a career to think of. Everyone likes to bug you and then when you are pregnant they don't want to be around you. Don't let your parents do the grandparent thing and get you down. You and your partner are very special people

Whatever way ye end up telling them, they will still prob feel hurt. Its possible they think ye do want children and dont know it..or something like that..and if they keep goin on bout it, ye'll realise it eventually.They obviously want grandchildren and yer just going to have to put them straight once and for all...its not goin to to be easy

parents want to be grandparents while they are still young and can enjoy those little ones, meaning it's time for you two to be committed, settle and have a family. for them it's the right thing to do. you are both lucky because your parents aggree to your relationship. just tell them you are waiting for the right moment and they will be the first ones to know.

they may still be hurt but you will need to be honest with both sets of parents. If they persist just ignore the comments they are your parents and parents are not perfect. Be glad you still have them to fuss at you.