My MAIN motivation for leaving the bike at home was two-fold -- one, I take the bike inside with me, and it took most of today to clear the space I use for parking (just got back on the job after an injury); also, the lock on the damned garage door decided to take a dump on me, and not allow my key to insert. So I have to force the door, and I'll need time to fix it once I do.

Weather DID enter into it, too...1F, windchill -15F, and I just wasn't in the MOOD for that. But the first two are rock-solid reasons.