Wow, there are 8 pages on this...(and yes I am going to add to this lengthy and going-no-where discussion because obviously, OP and everyone else have vastly different views on...well, everything. But, some really good discussions about grad school and life came out of it!)
- Just want to agree with everyone here that in grad school (and I've been at 3 schools, working/being a student, with each school having a very different culture from the others) is either single or is in a serious relationship that has started before grad school. Most people who are serious about grad school have found themselves unable to make time for dating (work and actual social life with friends take up the entire life), and even those who make an effort to date have found it difficult because their social circles, esp. if they're in a new city, consist mostly of grad school friends, and everyone knows it's a bad idea to date co-workers/fellow grad students.
- I do know a girl who has been on many dates from online dating websites. She's a few years older than you. She wants to have a lot of kids so it makes sense, I guess, to hurry and speed up the process before it becomes too late to have a lot of kids. But i can tell you that she is not happy - she puts too much emphasis on finding the right guy that she gets really depressed sometimes, despite all the great things going on in her life (great research, great lab, great city, etc.). If you go to grad school and your focus is elsewhere, I can tell you now that you won't be entirely happy. If you want to date - like many posters here have said - you can do that anywhere. Better to do it at a place less stressful than grad school, to be honest.
Bottom line is, I understand where you came from. People want different things. You want a husband, and kids. Some of us don't. And we shouldn't be convincing you to want otherwise. It's great that you think by going to grad school you're going to kill two birds with one stone: get a degree, and find a husband. I think what people have been trying to tell you is, your goal is all good and all, but it's also unrealistic. Go to school because you want to, and hopefully you'll get a partner while you're there, but maybe it's unhealthy to stress out over whether you will or will not find a partner while at school.
P.S.: to those who are trying to convince OP that there is much more outside of romantic relationships: I think it's futile. After doing the same for certain friends, I've come to accept that people want what they want, and there's no way you can convince them to think differently. The best we could do is maybe to help them not make terrible mistakes in the process of getting them what they want.