Thing with autos is that it depends on which make it is and which car/engine it's mated to. Most complaints come from people who have driven automatic Nissan, Suzuki, Hyundai, Mistubishi, Renault, Jeep, Kia, Daewoo and VW/Seat/Skoda (non DSG) models. What's the one thing they all have in common? Their gearboxes were made by Jatco. If you have the time, Google "Jatco transmission problems" for a laugh. It's one of the reasons Mazda decided to take production of their automatic transmissions in-house, and the results are infinitely better.
It's also very important to note the difference between automatic, CVT and DSG/DCT transmissions because they are very different, all operate differently and all have a different driving experience. You can't drive a DSG like an automatic, for example, because you're just going to break it (like a manual doesn't run well in stop/start/crawling along traffic, and just wears out the clutches quicker).