I must be the odd ball. I find the residual heat lasts for hours and hours. When I first wake up, I turn on the WH. After we have showered and done morning dishes, I flip it off.
I have plenty of hot water all day long for incidental use. Then when I start dinner, I'll flip it on again.
Sometimes I forget and it stays on all day, or overnight. No big deal.
DH and I have had several discussions on which is more practical; leaving it on all the time so it is primarily just 'maintaining' temp (his preference) or turning it off when there is no demand for hours on end.