I'll play the family card here, but it is a limited excuse, I imagine I'll be able to get out and ride more once they're older (including dragging them along).
The majority of my mileage is commuting at the minute, and even that has to fit in around family (2 kids and a Wife that doesn't drive, and is pretty scared of cycling anywhere on the road, certainly not with the kids). Being back to sit down for dinner together is also a key a requirement, so I only commute by bike when there's a bit of slack in the schedule so that a flat doesn't knacker the routine.
I'm also supposed to get at least one decent ride in (3 hours Minimum) each weekend, that was the agreement, but various plans seem to supersede this every other weekend.
Night rides are a good way to clock up some miles, but I'll admit to bailing on those due to tiredness lately...
The commuting is nice right now given the current weather, I've had to add an extra ~1 mile detour due to a local road closure in effect for the whole of this coming month, which means a bigger climb too, it's about on the limit of what I can practically manage on my fixie currently, but that's good for me I suppose, it's all training for something... Probably, not that I'll have the free time to enter, but still.
Riding I can do locally, from my door makes more sense right now than driving somewhere, it's all on the clock these days.