Motivation shifts overtime, from chasing miles, to hours, an event; but at some point, everything becomes old. Adding TM to my rides has been motivating the last few years.
@Norm pretty much sums it up with the decision to ride is made well before standing at the door. There are sometimes when I get up to ride and see it is pouring or some kinda of other undesirable condition and I go back to sleep.
I don't know what hours your job has, but it would seem like it is a "9-5" situation. Since I had kids, riding in the evening adds a ton of stress, simply from a family perspective. At some point you are running out the door to ride, kid is screaming, you didn't clean up the dishes,
insert 20 other things it could be. This stress is all on top of you had a shit day at work, and now you are waiting until 7 or 8 pm to ride? Ugh.
It took a long time to get used to, but morning routines make my riding WAY more consistent. Assuming your kid stays asleep... But work is generally quiet, you dont have a pile of shit to clean up before you go out and you are only limited by actually getting out of bed. Sure it is the coldest part of the day, dark, etc, but roads are less travelled, trails are empty and you can just zone out and ride....