Manual transmission

Personal preference. Holding the clutch pressed adds to the wear of the clutch throwout bearing and engine crankshaft thrust bearing. I usually shift to neutral and release the pedal. Doing that will put a little more wear on the first gear synchro each time you stuff it back into first gear. That can reduce the life of that part by about one percent, in other words, not much. One note, ... If you leave it in gear and get rear-ended, your foot will slip off the clutch and you could end up moving into cross traffic. This is really a personal preference thing and depends on how long you're going to be sitting there in gear.

I'm with Doc!--Not only get the "Wear Thing", but I have had my linkage break on the clutch system, and almost slam the guy in front of me when it Engaged on it's own! (I permanently modified and fixed that issue) Never owned anything but a Jeep CJ (began hurtling down the highway in 1981).I'm outta gear for a wait, I grab 1st, if only a quick stop!--The Medic