Congrats! We have a 8mo old kid and I am slowly getting back towards some regularity in bike commuting.

[I wrote a lengthy reply here, but realised it boils down to a couple of points]

I don't think the priorities are overly complicated here: my bike commuting and family obligations may be mutually exclusive on occasions, no matter how hard I try and how supportive my SO is. When (not if) that happens, family first.

If there's any advice I can offer, it's this: don't plan your life ahead too much right now. You don't know what you're getting into. Nobody else knows what you're getting into either, their kids and circumstances and marriage are all different from yours. The kid will be the biggest thing in your life, enjoy that feeling to the fullest. You'll see how it goes and what options are open in your situation, for you. You will be able to bike commute, but not necessarily to the extent you do now, at least not for a while.

Good thing is, more options open as the baby grows. For example, next summer our baby will be old enough to sit in a trailer - I'm beyond excited to get to make our first small holiday bike trip as a family.

Congrats again!

--J