It seems to me that working late nights to avoid distractions is only strictly necessary if all of the following are true:
1) you are not rich—can't afford to hire out housekeeping, (at least some) child care, all home repairs and maintenance, etc.
2) you still have your day job—i.e. not (yet) a professional artist or whatever
3) you have a spouse and/or kids (and you aren't a man alive during a time when it was considered OK to behave toward them in a way that would, but modern standards, be seen as neglectful)
I'd guess that for very few (none?) of the listed individuals were more than one of those things true at the time they kept the listed schedules.
1) you are not rich—can't afford to hire out housekeeping, (at least some) child care, all home repairs and maintenance, etc.
2) you still have your day job—i.e. not (yet) a professional artist or whatever
3) you have a spouse and/or kids (and you aren't a man alive during a time when it was considered OK to behave toward them in a way that would, but modern standards, be seen as neglectful)
I'd guess that for very few (none?) of the listed individuals were more than one of those things true at the time they kept the listed schedules.