A few years ago, it'd have been the adrenaline rush from the rides that I was missing. This year, the big kicker is not seeing much of my fellow CFers for several months. Living all the way up north does mean I'm quite out of the way, so I miss out on a lot of the non-park stuff such as the Christmas meet.
It doesn't help that I'm currently having to go easy on the spending at the moment, so I'm cutting back on other activities such as partying like a manic in Manchester every month.
In the meantime, I've got other things to keep me occupied, such as job hunting and developing some more geeky tech skills (in thrilling subjects such as Exchange Server, VMware and routing/switching). Oh, I've also just booked a few more driving lessons, so hopefully I'll be getting myself on the roads shortly. You may commence panicking now.