I tend to disagree with you on this matter and here is why. The site has been experiencing delays do to the recent large influx of users in the past few months, along with many other crypto sites, mostly resulting in slower Bitcoin transaction times. Also they are by far the most user friendly wallet. Im not sure what you mean when you say, "They can close your account at any time." As any organization whom I choose to do business can close my account, I don't understand how this is any different. It sounds like you personally had a bad expierence with coinbase and are now venting it out to the steemit community. Am I correct in this assumption? Thank you for your post. It's good to have differeing view points, but please feel free to explain you critiques of coinbase in further here!