In my opinion, gambling online we can play with identity not the real one, so that the family or the closest person doesn't know that we are gamblers. But in my opinion, gambling on the casino and looking directly at our opponents is more challenging. 
Agree. The biggest advantage yet of online gambling, is that you could play with a fake identity (in some games) instead of your real one. In some cases, you can even play at a gambling site without fulfilling the requirement of 18 years of age. And in others, we don't need to interact with humans at all, as everything is done by the blockchain (in the case of gambling games which operate on smart contracts). The benefits of blockchain-based gambling games are even better than traditional online gambling games, but their adoption will greatly depend and how successful they would be in the mainstream world.
Sometimes, it's better to gamble online than doing so physically, as the chances of being duped, or tricked is very minimal. However, not everything is perfect, as online gambling games still have their flaws. Which it all comes down to preference whenever the gambler wants to play within an online gambling site or simply visit a local casino for a better experience. Nevertheless, I believe that online gambling has far more advantages than regular gambling, as most games are provably fair, transparent, and don't require ID at all. Just my opinion
Online gambling provides an opportunity for those who for some reason cannot go to the real casino. And when combined with crypto currencies, online gambling experience can be safer than using fiat. Both are the best advantages that online gambling gives nowadays among the other advantages.
Definately! I also think in that kind of way, online casino give you the opportunity to play safer in some reasons, it's like training field. Also, online casinos can give you free coins and spins without deposit.