I agree with you because playing online gambling is not difficult and we don't have to complete any documents. just register on the site, make a deposit if we want or we can get some free coins and then we can play. we can use the android phone or laptop or personal to play and like you said, we can play it at everywhere without anyone knows.
Also, online gambling has resulted in new opportunities like gambling with Bitcoins. It is not possible to gamble with Bitcoins in a physical casino. To gamble with Bitcoins online, you will have to first make an account on respective website. Thereafter, you have to add some Bitcoins which are added to the account after some confirmations. Thereafter, you can play with the deposited Bitcoins and withdraw the final earnings. These websites usually charge some fee for withdrawal like 2%. It is one of the easiest ways to earn Bitcoins online.