At the end of the day, everyone's family unit works differently. You do what works best for you and your family.
For us, a big purchase such a car is a family decision. Also, it affects the family as its one of our modes of transportation. Doesn't make sense for me to buy a two door when I got kids to bring around. With the summer car and winter car thing, both are going to require insurance, maintenance, etc, while managable that's still a couple thousand in additional costs (money could be used for other things).
Smaller items, we don't sweat over. Each of us work hard and deserve to treat ourselves once in a while whether its a new outfit, shoes, lunch with friends, etc. She will comment on another pair of shoes though (black cements were my last purchase). WIth this being NT, I think its fair to say we all have or had a lot of sneakers (or what the other half might say is too much) lol.
You definitely have to know who your partner is, how they manage their money and be able to trust them. You have to be both on the same page with finances and make sure whatever you choose works for the both of you.
Back to the cars....
All you talking about GT3's, 720s, etc. What in the world do you all do for work?!
What am I telling my kids to chose as their careers? lol
(jk, don't have to answer)