Anyone who has been in the industry for more than 2 months knows that the "work is family" thing is a nonsensical feel good catchphrase thrown around by manipulative managers.
Your boss will not feel bad for you if you have a personal emergency which requires your absence and costs the company money (parent dying, spouse or children having medical problems, etc.).
Your company will not hesitate one second to fire you if the output you produce is deemed less valuable than the input you need to function.
Seriously, this is why Penny Arcade can get away with shit like that - because there are people out there who blindly believe that "work is family" and eat up the whole "it's not for everyone, others don't want to do it because they're not hardcore enough, but you're hardcore enough spiel". Statistically speaking, any argument that rests on the premise that you are better than 99% of the population is bullshit.
If you really subscribe to the whole "work is family" thing, go ahead. Then in 6, 12, 18 or 36 months, when you inevitably get fucked over, you'll complain about how you wish you had been warned ahead.
Sure, I love making work pleasant and grabbing beers with my boss and co-workers as much as the next guy- but at the end of the day, work is work, and anyone who tries to convince you otherwise has ulterior motives.