Unless it is part of your job description and your renumeration reflects this, don't take your work home with you. Work to live not vice versa.
That's a somewhat defeatist attitude.
I spent some time in my last job on ensuring that I could sometimes work from home. I knew that not having to go into the office every day would save me commuting time and expense, leave me more free of interruptions than I would have been in the office, and make my life easier in many ways; it would also mean that I could sometimes work in the evening instead of in the afternoon, or in the evening instead of in the morning, or on Saturday instead of (for example) on Tuesday, or do a week of 4 long days instead of 5 normal ones, or 6 short days instead of 5 normal ones, all of which which made it much easier to fit in with family life.
Working at home and working extra time are two completely unrelated topics. Your message suggests that you have somehow muddled them together.
It's also true that I have always found life much easier when both I and my employer have been flexible about working times (this has been true just about throughout my career) - some days/weeks I won, some days/weeks the employer won, and because both were sensible about it there were no days/weeks in which either of us lost. Of course avoidance of being employed by idiots is an essential precondition for sensible relations like that.