Do you have difficulty with this, too? I mean, aside from the whole:
It's good for me.
Running might be bad for my knees, but NOT running is bad for ALL of me.
I want to be fit and healthy.
It gives me some "me" time.
It gives my family a break.
A family that plays together, stays together.
Do you struggle? I do. Sure, I can (and have) signed up for races (both virtual and real) to motivate me. That works for me, usually. But then, if there aren't any races going on, or ones that have kinda soured, what do you do? For me, it takes something special, something i can sink my teeth into to get me outta the comfy bed in the morning.
Exhibit A: RNR Las Vegas. I mean, if you are able to run this, in this town, wouldn't THAT get you outta bed? Me, too. But alas, it isn't as simple as that for me.