Now I’ve done it (or actually last week some time).
Made the first bicycling trip with our son. One afternoon I crammed both of them into the trailer and bicycled a few round in the neighbourhood. They seemed to enjoy it.
We have to do it more in the future. Someday I might even pick up our daughter from the day care by bicycle. To avoid the big road I will have to take a trip more than three kilometres longer than by car. There is a long term plan to build a bicycle path along the big road, but who knows when that actually will be built.