For sure, that's why i do it. It's just cheaper and saves me time. But i definitely don't see that as a "best" option, because there are reasons for people choosing otherwise.
When it comes to "the best", I have to say that it is depending on our own preferences so something best should be subjective and you are the one who can decide which one is the best for yourself.
In this case the best for you is by buying it directly because you think it is easier and cheaper but for others (lets say me), the best is by wagering because I do like gambling.
But it does not mean that I wont buy at all and on the other side, those who prefer to buy it directly does not mean that they will not earn it by playing.
As simple as that, the most important thing to have in mind is that we should always spend our money wisely and responsibly both to buy it directly or to gamble.
Exactly there that discussion doesn't have correct answer since every points given is valid. We have different intentions towards in this option and not everyone would have the same opinion towards what they like. In my case I'm split into half since sometimes I'm lazy for reaching the requirements since my mood change so fast. There are times that I easily got bored then choose different casino to seek something fun especially to discuss interesting matters especially if there community is active.
Some choose to buy since there are times people think about they are wasting their time and money for doing that. Then want to shortcut things since they know that this token is good and want to add up in their portfolio without wasting some minutes or hours in their life. But majority who goes here gamble and don't prioritize what they can get from Shuffle since their main intention is either to win or have fun, those airdrops is just a bonus.