For me it is better to save money because if you are going to save a lot of money for sure you are going to have a purpose to invest.
But if you are going to invest money and you don't have savings then that is going to be a problem after all.
Because you don't have back up funds for your investment if ever it is going to fall.
Then why setting up an investment if you don't have some extra grenade on your hand?
Of course before taking such investment you must be 100% fully prepared so that if there's a problem especially some financial problem you have some backup funds waiting.