Yes I do, and I thought everyone did. Apparently not tho, my friend says 'If it's yellow let it mellow, if it's brown flush it down.'
I couldn't leave it tho.
At my Sussex home my ensuite and main loo is flushed with rain water so I happily flush it away.
In the West Country I let it happily mellow. Unless however it is one of those tangerine pungent yellow ones you do when slightly dehydrated after a run or something.
Too much information I know, but hey ho.
I also have a house brick in the cistern.
Little things like this off set my overall carbon footprint, which without my minor adjustments is pretty bloody awful.
Most certanly, unless my little boy follows me straight in (the usual thing, i generally have an audience of one) in which case, i wait for him to go too, then flush