Personally, I was in the group that worked twice as hard for a long time. But, currently, I am in "conservation only mode", until my kids grow up. I am aware of the consequences of the change in mode, in my own progress (from considerable to slow degradation). It is a choice I made. I would not have expected others to pay for it.
My ex and I had 8 kids between us... It is natural that your training go through phases when there is more or less commitment. But if you trained hard to start, you have a foundation you never lose. I am also sure that, when you do train you are a good student. Your technique might get rusty but the ability to learn once you have it won't disappear.