I think in part it may be the larger size, but I have stopped carrying a laptop on travel and depend completely on my 10.5" Samsung Tab S. It is still, even with the TAB S2 being out, a high end tablet. And while I have the very convenient and well-made Logitech BT keyboard which is probably larger than the one for an 8.5" tablet, I also have a Lenovo BT keyboard designed for the Thinkpad 2 Windows tablet. It is much closer to full size, plus it has Windows keys, which MS Office for Android uses. Yes, at home, I will always need my Windows desktop for the same reasons described above in my old post, but short of printing (which I have been just too lazy to learn how to do on Android), there is almost nothing I need to do that I can't do on my tablet. I am actually surprised. When I bought the Tab S as an experiment to see how good a laptop replacement a tablet would be, I was very skeptical.