I did not wait for marriage, and don't regret it. With my first partner I waited about 3 months, 2nd partner only took one date, 3rd partner was a few weeks and I'm marrying her so should be the last one, unforseen circumstances aside.
As for you, you pretty much have to decide if it's important to you. I decided it wasn't, well my body did most of the deciding but yea. In my opinion, you want to be pretty sure you'll at least be with the person a long time, so as to keep the number of partners as low as possible. I do kind of regret my 2nd partner, as I wasn't with her very long. But yea, that's me, you need to do what you feel is right for you.