It's an interesting discussion; let's vote
You can do well to express yourself so you make a complete meaning and start a proper discussion.
As a newbie to trading, demo trading is advised, but it is not always necessary. There are traders who started trading the live market with the knowledge they have, ignoring the losses, but hoping to learn in the process.
They were able to accommodate all the losses they made because they had other sources of income and used very small lot sizes in their trades.
Trading the live market directly has its own merits, like the mastery of the emotional aspect of trading more quickly than someone who demo trades and will need to start trading the live market before they understand fully their emotions, and how it can ruin trading because the live market is where emotions are put to the test.