I don't think its wrong to wait to marry, as long as you're not waiting for a "perfect" - because there are none. Just like if you wait to have children until you can afford them, you'll probably never have them.
If you're dating someone and they are pressuring you to get married, they're probably not the person you're looking for. Get married for love, that you really can't see yourself living without the other person, no other reason.