I guess it depends. For me at least, my motivation regarding being staff and playing MC in general is about the same level as when I resigned, so I wouldn't come back. If for you, this is the same then that's a pretty easy answer. But I'm guessing since you made this thread, something has changed xD. If so, then I guess it depends if you want to stay in it for the long haul. The mentality I've always had is to stick it out for a while, rather than being staff for short bursts, but again this depends on how you feel.
If you still play on the server, yes. If you don't, no. You were a good staff member and frankly, being a staff member is no big deal and shouldn't be treated overly seriously (not that it should be treated as a joke ofc), so there's no reason to overthink this. If you think you'll have fun doing again it and you're not just missing the fancy tag, go for it.
ok I didn't think I'd get serious responses, I made this as a meme lol. Currently, I have no plans on re-applying but never going to say never. I enjoyed my time here, a lot frankly Maybe if I have the free time again some day but today is defo not the day