> I moved all home computers to Linux a while ago and family members do not complain more that they were with Windows. It's more a thing of habit, I believe, as many are grown up with Windows.
Even literally double-clicking is pretty much always more painful for me (most pronounced on laptops) on Linux OSes than on Windows, and that's the most basic command on a GUI. Too often the mouse always ends up being too sensitive and moving when you're just trying to click, or the default delay ends up being too short, or the mouse ballistics end up being too awful and unnatural so you can't even aim the damn thing. Or like the window-close button doesn't extend to the screen border, so you have to aim the mouse like a sniper rifle at the close button just to close a window. And forget about many of the multi-finger gestures or other features of your touchpad/mouse; you're lucky if even both two-finger scrolling and edge scrolling work for your laptop.
Now I don't know about your family, but I wouldn't expect my grandma to tell me the mouse acceleration curve sucks or that there's a 3-pixel border that makes it hard to close a window, or that double-clicking turns into dragging when she's trying to click, or that the focus stealing prevention isn't working well, or the myriads of other things that Windows has clearly paid attention to and Linux is oblivious to. She'd just try clicking and get confused why it's not working until it works.