If modern culture weren't so sick, you'd be ready at 14 like in the olden days.
But like everyone said, there are the practical issues to consider about having careers realized--let me tell you, I advise making a really good, practical plan for that now rather than later.
I agree with Cally in this. In the older times, kids had to grow up and mature and get married at such a young age! Back then you were either a child or an adult. There was no such thing as adolescence and 'teenager' phase.
Since being married myself at the age of 22 and my hubby at 23, I am incline to say get married young if you want! My hubby and I have grown so much and matured a lot more compared to others around us who is our age or older. We see it kind of childish to delay responsibilities. Its not age and years that matures a person, its the responsibility. Even in the beginning Adam was given the responsibility of taking care of the animals and the garden, then his wife! If you have the means to provide for her then get married! Even if it's not the 'career' you'd like God will bless your marriage and provide for your needs!
Paul even said if you can't control your sexual urge, get yourself a wife. Even better, enjoy your young wife! We honestly think waiting is the secular view of enjoying and testing the waters before you settle, which only causes heart aches. And we have seen it, and I had gone through it with my own long term commitments with other guys, which I find pointless now and unnecessary.
We've been married for over a year and finances were difficult at times, but God continues to show His goodness to us by his provision and blessings. But we wouldn't have change anything except the fact that we should have gotten married sooner. (We had been good friends for 4 years, then got married after a year of being together).