First, you're presuming that my laptop is at an office and I remote in from home. That's incorrect. I work out of my house and remote into my laptop from outside of "the office". Regardless, the premise is the same.
I'm not sure why I need to point this out but here are a few possible reasons why someone (me) may want to leave a computer behind and use a tablet for remote access instead:
1. Weight. The laptop is about 15x the weight of the ipad/keyboard/and stand (really digging the keyboard and stand by the way)
2. Form factor. The iPad/keyboard/stand takes up MUCH less space in a bag
3. Just randomly counting as I type this, the laptop has 5 peripheral devices plugged in all the time (sometimes maybe more). Unplugging and re-plugging every time is quite a hastle if I wanted the laptop to be mobile. I don't have a docking station and I'm not sure if one is even made for this model.
4. The clincher... the laptop is used formerly and has a battery good for about 45 minutes. This requires me to also carry the charging cord and ensure I'm by an outlet when I want to use it. Sure I could expense a new battery, but that doesn't fix the aforementioned points.
conclusion: My bad. I should have said "PC" instead of laptop. My company-issued laptop might as well be a server sitting in my closet in terms of how mobile/portable it is.
I'm purposely not even touching the
expensive piece... You do know what company/brand this website is centered around, right (hint:

)? Surely I don't also need to point out the irony there? I don't know/care enough to address the "bloatware" comment in regards to Office other than to say just because a piece of software contains a lot of features that you may not ever use doesn't mean that it's "bloated" (assuming that's what you're referencing??).
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One thing to add, rico, is that if my needs were different, sure I would want to carry around the laptop itself. For what I need to do when I'm "on the go", I can do it all using the iPad, BT Keyboard, collapsable stand, and teamviewer.