When we bought our house we were mid-30s, no kids yet. Our rental was a 6-mile bike ride from his work and 11 miles from mine. We both biked, but not daily - him 3x a week and me 1-2x a week.
So, when we house-shopped, our goal was to be between the two jobs (still) so we could each bike to work. That limited our search to a particular stretch of freeway exits.
As it so happened, we bought a house closer to his work than mine, so his commute was 5 miles and mine was 12. That dropped my biking down to 1x a week but his stayed at 3x a week.
The kid thing is important. We had our first kid 2 years after buying the house and I didn't ride at all that first year - there was no way that I was carrying a breastpump AND laptop AND lunch on my bike. Lather, rinse, repeat for kid #2 6.5 years later.
Of course, 3.5 years after buying the house, dh changed jobs. 2 years later I changed jobs. We now work one block from each other, 10 miles from home. And we don't bike. We have off and on but it's been hard with kid schedules and allergy season. And too many of my biking friends have been hit in the last 3 years. Makes me nervous.
You can't know where you are going to be in 10 years. The daycare point was a good one too - our daycare for kid #1 was right next to husband's work.