People who prefer staying on the web would definitely choose online gambling. There's a big different for casual way of gambling and online gambling.
where are you from? in my country online gambling also is not allowed because online gambling here doesn't pay in our government the right tax or they dont pay at all that it why it very illegal here but i saw some site still running an online gambling site.
in here the very popular gambling here are horse racing im thinking to build an online version of it but im very afraid to do so. im still learning and searching the best way so i won be detect by the goverment.
And that's a different case if your country doesn't allow you to gamble online then you have no choice but to gamble with traditional gambling or don't gamble at all.