41 here and happily married.
The only mid life crisis stuff I have are ironically very affordable things: art museums, music, reading, playing chess and video games.
We're married without kids so outside of work...i basically have all the time in the world to indulge. So not really a crisis.
I think my upcoming midlife crisis items will be remodeling our house to update it and make it more luxurious.....and traveling out the country.
we've worked and saved for 20 years...so time to enjoy the stacked bread a little bit.