In many countries where gambling is a taboo - and people do not gamble because its not legal and its considered as a sin.
The people there can do online gambling and satisfy themselves. However - those people have a thought behind their mind if they are doing the right thing or not.
Online gambling provides an opportunity for people curious about what gambling is like. People who have never gambled before will try to play gambling because of curiosity or by reading the experiences of other people who have played gambling for a long time. It's also the case with people in countries where gambling is taboo and illegal because of that curiosity. As long as they try to chase winnings from gambling and only play gambling for fun and can control themselves, they will not get into trouble from gambling.