Even in my younger 'semi-wild' days (I've always been a little bit sensible, even when I first moved out from home and 'could do what I wanted, when I wanted') I made it to my bed for a few hours before work.
One job didn't finish until 2am. We'd finish work, grab something to eat and then go rolling skating or 'star watching' (read what you will into that one!) up on 'Plymouth Hoe'. I remember once going skinny dipping.. but I think a bit of alcohol might have been consumed. Bed might not beckon until 6am, but it always featured. But this was pre-responsibilities.
Even when I had the kids, I always managed to snatch a couple of hours. Sleep is a currency and I need to make sure I always have enough savings in the bank for emergencies. If I go over and use up all my savings and go into the overdraft, I work hard to get myself back into the black (I'm sorry if I've gone overboard on the picture portraying, I'm just enjoying the word playing, humour me? I'VE NOT SLEPT!!!)