I was an AMD when my site (a hybrid community site of an academic group) was eaten by TH. Beware.
I was already pretty crispy, and was in the middle of moving, and actually was getting married (just eloping really) the weekend when TH wanted to meet to find out "what I loved about administration." I told them point blank I hated it, I didn't want to do it, and if they made me, I'd quit on the spot.
Needless to say, I was treated with kid gloves for a bit, gradually cut my hours back over the next couple years, quietly moved eggs into different baskets, and then they decided they didn't want any part timers. Their loss, I figured, so I bowed out gracefully to "retire" to HPM.
Got a call about 6 months later asking if I'd consider coming out of retirement because they'd had some docs quit.
I happen to really like the poor guy who had to call me, so I didn't laugh, but no, I'd found my calling, but good luck.