It's kind of even beyond that. I understand nitr0's reasoning because he has a real family, but his occupation is finite relative to most. While not entirely comparable, military families often sacrifice far more time with their families under considerably more stressful situations, and less pay, just to provide. It's a symptom of expectation, but there are plenty of people who make far less with worse work/life balances. Sacrifices should be considered in any occupation, but there's a strange expectation of freedom steming from the pro-gamer crowd.
I don't want this to sound like I don't understand the mental/physical toll enacted by the occupation, but in context there is definitely an issue some players have with being 100%. I don't know anyone on Liquid, I can't speak for them or their motivation, but it's hard not to be critical of a team that has routinely gone on record saying they took extended breaks and always suffer after.