Important for who?
Important for learner88 who put up the original question, and for those responding, if we are to have a sensible debate.
Important for who?
Obviously, you are making the assumption that you have everything that it takes to become the next Maria Sharapova. I am pretty certain it's not true (I've never seen you but I am sure she has nicer legs), plus it's important not to discount the value of luck along the way to the great success.It's kind of like aiming for the Dream, or playing it safe. If you have the skill and fortitude and character and talent...entertain the idea of playing professional sports. instead of getting a job in the workplace.
But of course...for every Michael Jordan, Tiger Woods, Floyd Mayweather, David Beckham, Maria Sharapova...there are tons of sardines in that vast ocean of so-called talent.
First of all, it's very hard to separate "trading" from "investing" and any cutoff will be arbitrary. If you go down the passive vs active road, there is value to both and it's worth combining them if you have the expertise and the time. Second of all, active investing/trading naturally incorporates frictions and those things add up very quickly (btw, one of the arguments against robe-advising services like Betterment is the transaction costs).You haven't seen me play tennis yet...Obviously, you are making the assumption that you have everything that it takes to become the next Maria Sharapova. I am pretty certain it's not true (I've never seen you but I am sure she has nicer legs), plus it's important not to discount the value of luck along the way to the great success.
On topic nowFirst of all, it's very hard to separate "trading" from "investing" and any cutoff will be arbitrary. If you go down the passive vs active road, there is value to both and it's worth combining them if you have the expertise and the time. Second of all, active investing/trading naturally incorporates frictions and those things add up very quickly (btw, one of the arguments against robe-advising services like Betterment is the transaction costs).

And make sure to take whatever "supplements" Sharapova is takingYou haven't seen me play tennis yet...![]()
...to even the odds.