Getting married might be able to limit individual's potential success as marriage requires more responsibilities. But it doesn't mean you can't be successful anymore.
There are several medical studies states that giving birth by 30's could higher the risks for your child to have disorders, which is one of our reason to start an early family.
We still work as professionals and pay taxes and contribute to the economy.
There's nothing wrong with getting married at a young age as long as you both have stable jobs that will provide your basic needs especially to your future children.But if getting married at an early age without having your own jobs,i know this will definitely lead you into poverty.