Why do I need to use meeting password in scheduling a meeting?

This is a security measure implemented by Zoom to prevent unintended persons from joining a meeting. “Require meeting password” is the default setting in meeting scheduling.  Meeting hosts are advised to keep using this security feature when scheduling their meetings.
 
Meeting password will be encrypted and included in the join meeting link to allow participants to join with just one click without having to enter the password.  A participant will only be prompted to enter the password if they manually type in the meeting ID to join a meeting.
 
The meeting password will be included in the meeting invitation together with the meeting ID and link.  A sample is appended below:
 
Ada Lee is inviting you to a scheduled Zoom meeting.
 
Topic: My Meeting
Time: Mar 12, 2020 12:00 PM Hong Kong
 
Join Zoom Meeting
 
Meeting ID: 191 001 XXX
Password: 993XXX
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