Other addictions
I have been fairly restrained on bike-related purchases lately. Acquisitions have been limited to the purchase of new kit. I rebuilt the bike over the winter, so I don't have anything to tweak on it.
I have an Olympus OM-D EM-5 kit in a small Think Tank backpack. It makes it easy to combine cycling and photography - two hobbies for the price of one!
If you need a hobby to really vacuum out your wallet, try watch collecting... a new Rolex costs as much as a superbike. However, the authorized dealers have years-long waiting lists for the more popular stainless steel models. At least with a waiting list you won't succumb to a spur-of-the-moment purchase, unless you go "gray market".