When I go over to Alan's house, we haven't seen each other in days, maybe even a week, so of course we have to have sex right away. The first time is quick and utilitarian. But afterwards, if we're not planning to go out, we don't get dressed.
We just spend the next several hours together, ass-naked, hanging out. (Heh... "hanging out.") We read, cook, watch TV (we're big on schadenfreude reality shows like "Intervention", or anything of the format "World's Deadliest... Caught on Tape!"), play video games, nap--always naked, always in physical contact.
It's a nice feeling, not really a sexual one, but incredibly primally nice, to have warm skin pressed against your own. It's worth savoring. It's also a little arousing. At the end of naked time we have a lot of sex.
I guess you could do that every day if you were married. I wonder how many people do though. There's probably some cooling-off period after which you start wearing clothes or it's just gross.