Sometimes it is work. Sometimes it is TV. Sometimes it is internet. There are lots of choices how to spend those 65 hours a week. Sometimes people have chosen a career without understanding the time requirements and then they simply have to make a decision whether to continue or start over. Neither would be easy.
I would never consider someone a workaholic that works less than 60 hours a week. Choosing work over everything else typically requires much more than 60 hours a week and it is consistently over 60, not once in a while. There are also those that aren't strong enough to stand up to someone and work too much because of it. Not sure why they don't try to change jobs but I don't know their specifics, so I don't judge.
I am a C level guy and I know C level guys that are at both ends of the spectrum. Some have balance, some don't. Most people that qualify as "workaholics" in my book is because if you got them to admit it, they enjoy being at work more than they enjoy being at home. Sometimes you do have to sacrifice but my experience is that those times can be very short lived.
People lose perspective though. Our farmer ancestors worked dawn to dusk every day and all of that work seemed to do them a lot of good.