I'm getting the same thing. I am the ONLY child/grandchild that has not gotten married. One of my brothers is the only one that has not had a baby (although they are trying) I had a son when I was 17. This is one of the main reasons I am not married yet, the other is that I've lived through my Mother's 3 failed marriages and my Father's 2. I love my son and he is number one, therefor I am very picky about the people I have dated (very few and far between).
I have found the person that I KNOW I want to spend the rest of my life with and (the best part) he and my son get along really well. My family, now that I am with my boyfriend they are really pushing. (so if they are pushy now, just wait until you bring someone home) My boyfriend is much younger than me and I constantly have to keep that in mind so that I don't let my family push me into pushing him.
So, anyway...my advice would be to tell them that you do not want to end up in divorce and you would rather hold out for the right person. This might hold them up for a bit. Just remember that it may go into full force when you do start seriously dating someone. Just make sure it is something/someone that you REALLY want and not your family convincing you that it is.
Good luck
