It probably is decadent but also thoroughly unlikely for most of us, among all the competing priorities, drains and places to be. It used to be more acceptable and possibly encouraged, but now it seems like a lack of ambition to want to have a nap. It is pretty much accepted in an 'always on' culture that we don't get enough sleep, especially with a busy job and family, so surely we don't have time to nap?
In Spain the midday siesta made sense to beat the heat and benefit from being awake in the cooler parts of the day, but now it's discouraged in cities for being a drain on GDP. But is a nap more than just extra sleep and can it have a bigger benefit on our physical and mental health than we realise?
The benefits of napping have been studied and one even went as far to suggest that a couple of naps a week can have a protective effect on the heart in certain situations. The benefits to overloading brains are subtle but if sleep helps the brain reset and calm down from the excitement of being awake, it makes sense for a nap to help reset it too. Studies have suggested that napping does indeed have the potential to improve alertness, creativity, cognitive processing and more.
So if a nap can stop our head from popping shouldn't we all make the time? It can be a helpful tool to have up our pyjama sleeve, but unfortunately it's not guaranteed to always work. Managing sleep patterns to get enough, but not too much sleep, seems to be the best way to not trigger migraine at least. As ever complex variables are at play, but if you are overloading and haven't had enough sleep, treat yourself and see if it helps to have a nice snooze.