May shed a tear when the toys go but it is a step in the right direction, may the force be strong.....
You can always do fun stuff of other kinds, make friends with people who own boats or sports car, or rent stuff a few times a year. While it's not practical to rent a Porsche Carrera 20 times a year compared to owning one and taking it out every other weekend, you should be able to find suitable alternative fun activities. One of my friends went from racing cars 15 weekends a year to running & cycling, for example. It's different, but similar
enough that he still gets his competition and racing itch scratched and unless you're being ridiculous about your bicycle purchases, it will always be cheaper to buy and maintain a race bike than, say, a late model BMW that's taking the punishment of 15 time trial track days a year.
Maybe take a look at what it was you enjoyed the most about each activity you do and look for something related that's much a cheaper alternative. To me, one of the most valuable things I learned on MMM was that it isn't just about depriving yourself of nice things, it's a matter of saying instead of this nice expensive thing, I'm going to do this also nice but inexpensive alternative instead. Like MMM commonly talks about getting rid of cable TV and buying Starbucks, but replace it with high speed internet and a Netflix/Hulu subscription and make gourmet coffee at home. You get a substantially similar experience but for much less money.
It's far easier for me to accept trading down to something cheaper rather than saying I don't get to do a particular activity at all anymore.