I can actually say that the cost of living and co. are correct
Oh? Aha :)
Mobility costs
You only have one car? Otherwise, I already have some doubts here...
We hardly have any insurance costs
That’s unwise in some cases (disability insurance), in others it will necessarily change (homeowners’ association fees, household insurance,...)
Restaurant costs = none, savings mode!
Oh come on, you cook every single day of the year? Never got a döner? Through the drive-thru at McDonald’s? No beer garden in summer? No romantic dinner for two at the Italian place? Whatever it is, €0 is simply not possible!
Clothing = 5, if anything
You realize that yourself, right? Your “if anything” is trolling.
Tickets (football, cinema, concerts etc...) = 5
Never to the swimming pool? Girls’ night for 50 Shades of Grey? No culture? €2.50 per person... that’s just nonsense, sorry.
Vacation = max. €500/year, savings mode!
Again: that’s the cost of a weekend city trip, you weren’t really on vacation yet...
You want to live like this for the next 20 years? If you remain childless, financing is permanently easy, then you don’t have to make the costs look so favorable... ;)