This is just me, but I get around 7 hours of sleep each night, I tend to be very reluctant in terms of going to sleep - but I can work and function just fine the following day. I'm almost 30 years old. I'm very much a night owl and I cannot stand mornings. I can't even stand people telling me "good morning" because...well, it's morning. I can go to sleep as late as 5 or 6 AM on certain weekends, if I'm not tired; if I am tired then I just pass out involuntarily. I can still call 7 hours "lack of sleep", they say at least 8 is optimal.
Social life - well I don't really have much of one, only made a few friends in recent years and I text them way too much, even when I'm up all night I often just have some random thought enter my mind and I text it to them. I always have something on my mind, whether it's anxiety or something exciting. I mostly communicate with my parents and live in their home, and mornings/lack of sleep tend to have adverse effects in that regard. I'm much more likely to have my outbursts in the morning time before heading off to work. When I feel sane I just don't understand how these outbursts even get triggered, and at the smallest things. Even when I get enough sleep my mood is still unstable in the morning; that doesn't change the fact that I can't stand getting up early.