Thank you to every one who took the time to answer. While I agree with most of you, there are a few things I'd like to add and/or change.
First of all, 12-14 may be socially acceptable in some cultures, I agree that is way too young. Some girls haven't even became a woman yet, some boys are incapable of being men just yet. While I can see some cultures where marriages are pre-arranged at that age, I cannot see why they would want marriage right then. When I was 12-14 I was worried about school, what I wanted for myself in adulthood as a career, who I wanted to be. Although I had the fantasies of who my dream husband would be; someone who never holds me back, encourages me in whatever I want or set out to do, helps me up when I fall down and that never makes me feel less equal to him in comparison but who loves me for me and all my quirks. However, I never wanted marriage right then, I felt I was too young, immature and not ready.
Which brings be to my next point. I felt I wasn't ready then, but when the time came where I felt I was ready- I had just barley turned 19. Seems pretty young to most I know, but I had already lived outside my mom's house the majority of the time from when I was only 16, having consistent job(s) while still attending school full time.
In my case, I know what expenses life carries in more than just the financial sense, had and have a fairly concrete goal of what career I want, am currently on the path to obtaining a degree in such-dated the man I married for over a year and a half after knowing him for nearly 5 years at the time we got married, and know he's exactly my dream husband.
While I agree life is an ongoing venture, I felt I was and know I am ready to share mine with some one. Our crazy abnormal, rollercoaster ride of a life is just that, but it's ours and we chose the other to share the ride with.
Our desired traits, wants and needs will tend to change as we evolve and gain experiences, yes indeed. If you feel you are ready and know either from past experiences or current mentality level; all I have to say is live with them for at least a year, go through hardships, stressing where the next meal will come from or money to pay electric, see how they deal with and handle life daily, how you as a couple will solve such hardship(s)- then decide if not only you yourself are ready but if you as a couple are ready as well. Marriage is for life,love,pain,smiles,laughs,hugs, and tears, marry who will go through it with you.