I'm not sure how to answer to a previous answer so I joined the chat and I couldn't ask anyone as I'm lacking repuatation.
Come on guys, this side is supposed to be "easy" and enable an instant interaction -isn't it?
This site's number one focus is providing Quality Answers and Questions. The reputation is modeled around that - for both Chat and on the site. Gaining 20 reputation is relatively easy so long as you participate within the site (If you gain two up votes on either a question you have authored or an answer - as an example). The Chat is considered a Third Place on the StackExchange network and isn't the main focus of the site as a whole.
I believe it's meant to deter new users from jumping into chat and asking questions without first understanding or participating on the main site.