Do people think the card they draw is really a message intended for them?
There is a long history of the role of magic and the non-rational in Jewish life. Some people are open to the idea of forces at work which guide their pick; others would scoff at such an idea. No matter where your beliefs fall each card has something to offer, so you can approach them with whatever kavanah you wish! Some people enjoy the randomness, but it is also possible to view all the cards and choose the one or two you want to focus on, eliminating the randomness.