Surely this is the whole iPad debate in a nutshell. A device that people who were brought up on computers can’t quite get their heads around. So why bother trying to force the issue to please that narrow demographic? Why not just remove yourself from the argument all together?
What people fail to understand with the computer industry is that everything you know to be normal was just the way someone thought to do stuff.
I own an iPad. I love it. Yet, for me, it will never replace a computer. As I said, sure, I can do a hell lotta things on an iPad and for many this is enough. For me, it's just not.
I - personal, and I'm aware this is subjective, it's just to give you an idea - just off the top of my head, need:
Matlab
R and other Statistical Software (like SPSS) - granted, these may be around already, I'm not paying attention to this (due to lack of need - I prefer my MBP)
Parallels - ArcGIS (amongst others, like Software to read in data from instruments connected via serial adapters)
Fully functional Adobe Suite, especially inDesign and Photoshop, the latter usable with a graphics tablet (granted, the Apple Pencil is great)
Full Excel funtionality
Endnote (with Word integration)
Can we do full raw image editing, yet? Has LR made it onto the iPad, yet? Again, not really following this because I have it on my Macs, so no need.
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I love my iPad for emailing, internet, video, light text editing, reading .... on the go. My husband uses his for essentially everything he does, including video editing, but he has none of the above mentioned needs I do. Frankly, lately he's returning to the iMac to do photo editing...
If you end up hooking up your iPad to monitors and keyboards, constantly...why not get a dedicated desktop/laptop? And yes, at least up to some point an iPad just doesn't have enough computing power, yet(!), as my 24 GB RAM iMac....
It has NOTHING to do with how I was brought up. I embrace new technology. But, I'm a strong believer in specializations and having dedicated machines for different, specific tasks. If you start trying to find a fits-all-solution, you inevitably will end up with compromises...