Regardless of which UI, you do not know people are using their computer for, or how much free CPU they have available.
My friend's 1.2Ghz Core 2 Solo[1] laptop takes many seconds to reload locally hosted static HTML. Loading a youtube page takes >30s, sometimes far more. Anytime a webpage has CPU-bound Javascript - intentionally or not - the mouse becomes a lot harder to use. No, they are not buying a new laptop anytime soon; they live below the poverty line with student loans and medical expenses.
Regardless of which UI, you do not know people are using their computer for, or how much free CPU they have available.
My friend's 1.2Ghz Core 2 Solo[1] laptop takes many seconds to reload locally hosted static HTML. Loading a youtube page takes >30s, sometimes far more. Anytime a webpage has CPU-bound Javascript - intentionally or not - the mouse becomes a lot harder to use. No, they are not buying a new laptop anytime soon; they live below the poverty line with student loans and medical expenses.
[1] https://en.wikipedia.org/wiki/List_of_Intel_Core_2_microproc...