It's 2016 and technology is a normal part of everyday life and will become more more so over the near future. I want my daughter to learn everything about it from an early age.
The whole point of modern devices is that they are so ultra-intuitive that their usage methods can be picked up in almost no time at all. Kids don't need years of practice, any more than they require years of practice to learn how to eat bags of crisps or whatever.
"Let's get the kids practicing with the technology so that they can learn how to do it" made sense in Ye Olde Days of big-box computers where you typed long strings of letters and numbers into a plain black screen to make the computer do things. It actually was very complicated (requiring practice) and because it was so bare-bones, the process of practicing really forced you to learn how computers worked.
Playing with iPads, Kindles etc. will teach a child literally nothing about how a computer works. Nothing. And the interfaces they use will all be obsolete by the time your child enters the workplace.
If you want your child to actually learn about computers, put her into coding lessons when she is older or get her a deliberately retro device like a RaspberryPi. Both those ideas are actually genuinely useful. Kindle Fires and similar digital popcorn do not help children learn how computers work.
Most of the Silicon Valley tycoons heavily limit their own children's use of technology and even tend to send their children to private schools that boast how little technology they use in their classrooms. There are reasons for this.