It gives you more flexibility in that you can learn at your own pace and at your preferred times. We can find a teacher that can work with you at your own chosen times.
It also makes it possible to take classes in any place with an internet connection.
By not having to travel to a classroom, students save time and money.
Also, this way of learning is well suited reserved or shy people that might feel uneasy or intimidated to talk and ask questions in a physical classroom.