It's all up to you when you hate or do you love and addicted gambling. The people who really Love's and addicted gambling is...they don't mind money where it's came from. But from the people who really hate's gambling for sure they will ask first where the money came from and for sure the first reason that they will put on their mind is the money is from a dirty place where the gamblers are there.
Their are few reasons which differ from people to people . Firstly if its a banned in country and still gambling then people consider it as bad money . Secondly if its banned in any religion and still doing then they do consider as bad . Then its a individual decision if they find it good or bad .