People like to use tarot cards because they are easy to use and very accurate. A tarot psychic reading is consistent. You can ask the same question twice of the cards and get virtually an identical answer. This removes the possibility of randomness from tarot.
After all what are the odds that someone can take a deck of cards, shuffle it. Lay out a spread. Reshuffle the cards, lay out the spread again and get almost the same results?
Another reason why people especially women use tarot readings is because there is continuity in the clarification readings. Lets say you do a basic tarot spread, you then decide to expand on the spread to gain some clarification. The continuity spread follows the logic of the first spread seamlessly. That is why women often seek online or over the phone psychic readings to sort out their love life. It brings clarity to a very emotional and unclear situation.
tarot is also a pictorial way of presenting information . The cards present information visually and sometimes it easier for the average person to understand what the medium's advice is.