AllieKitty,
I always believed that when I grew up, I was to get married, have kids, stay at home with them, etc... I did exactly that and never once regretted it.
But it is best for one to live the way they want to live, what is right for them rather than what society predicts or expects.
It would not be wise, I think, in this day and age, to have kids just because it is expected. Many people are enjoying a happy life, even marriage, without having kids. It is much more common and accepted now than ever.
You will find many others in this forum who do not have kids, who are happy, and can help you understand what you are going through. Whatever you choose to do in life I wish you well. You will find your path, your happiness - hang in there, and know that many others understand and are willing to help you feel ok about your feelings and your choices.