Direct opposite here. I can easily forget to take a shot once a week and I often find myself doing exactly that. I pin sema on Saturday night, tirz on Sunday. The number of times I've been halfway to sleep and had to jump up to take my shot is pretty high. Sometimes I forget entirely and take it the next day when I remember.
On the flip side, I take my pills every day. They're a habit; I don't easily forget them. Most of my pill case is supplements I choose to take (collagen, iron, vitamins, fiber, etc) and the rest is allergy meds, so I'm pretty motivated to remember them.
I'd never choose an injectable weekly drug over a daily tablet for maintenance. Injectables are a no-brainer right now for active weight loss since they're so much stronger, but I'm looking forward to one day not needing them and letting my subcutaneous fat take a break.