[kwhitefoot]

It's something that one can do at certain times in one's life, in certain circumstances. There was a period in my life when I worked eight hours in the office, commuted nearly an hour each way, had dinner, worked another four hours at home and did this for months on end.

Not 80 hours but about 60 which in my opinion is still far too much in the long run.

It was worth it for the results but I wouldn't, and quite possibly couldn't, do it now thirty years later.

So it's not necessarily a problem unless it becomes an uncontrollable obsession or is forced on one.