This is a question I get a lot.
Despite what we often see in pop culture, tarot reading is not akin to fortune telling. Tarot is a tool to read the energy around a situation or relationship that we may not always be able to see. Each of the 78 cards has an archetypal meaning, with nuances that can be interpreted by a skilled reader's intuition. The cards are excellent at tapping into the subconscious and bringing to light things we may not be fully aware of---energies we are closed off to, blind spots we may not be able to see when we're too close to a situation, etc. They are a neutral, intuitive third party. They are not a Magic 8 Ball that we can shake and receive a binary fortune.
Say for example you are a single client wondering when you might meet your soulmate. Rather than asking exactly when you will meet that person, a better question would be how to get to that point - what you need to do or work on, what type of energy the soulmate will give off, how you will know when you meet him or her, etc. The information given in that reading will be far more detailed and accurate than expecting the cards to tell you you're going to bump into the person at Starbucks eight Tuesdays from now. By looking at the energy of the situation and your eventual partner's energy, you can better prepare yourself to be as connected to your highest self as possible when the time comes.
The other thing that makes fortune telling unlikely is that we all have free will. We can make any decision we want at any point in time. I personally do not believe that our futures are set in stone; rather, they shift and evolve as we shift and evolve as people. Going back to my previous example, perhaps you're on track to meet your soulmate that fateful Tuesday, but you decide instead to save some money and make your coffee at home instead of going to Starbucks. Or, perhaps I receive a reading that tells me a potential job is a good fit for me. It is still ultimately my decision whether to accept the offer or not. The cards tell us about our energy at the time of the reading; it can and will change if we veer dramatically off course.
Bottom line, tarot is better suited to being used as a guide in helping you make the right choices or getting clarity on how you actually feel or the energy around you. To write it off as merely a fortune telling tool is not doing a service to anyone.