I realized I have an amusing story to share that shows both ends of the spectrum from bad-assity to catheter and bedpan.
My daughter was born two years ago. We always been relatively frugal and Mustachian, but I think having an incoming first child messed with our heads briefly.
We have a 2002 4-door, our only car. 2002 was the year just before LATCH standards were required for cars in the USA. LATCH is basically an industry standard way to attach car seats to the frame of the car. 2002 was an odd in-between year where some brands had the LATCH system, and some didn't have any. My car, bizarrely, had the screw hole mount points on the subframe, but not the actual "latch" points.
Anyway this is background/excuses for the following: We decided, "we should buy a car!" Not only a car, but we actually went to a dealer and test drove and for 1 day truly considered purchasing a $50k Audi Q5. Yeah...
Luckily the next morning, having slept on it, we looked at each other and both said "What the hell were we thinking!"
Instead, I found the OEM conversion kit for $40 online from a reputable parts dealer. Got my wrenches and disassembled the back seat of my car, installed the LATCH system, and re-installed the seat. Everything worked out perfectly, we still have our one car, which only had 7,000 miles put on it last year (we both walk to work!).
So yeah, one problem, a $40 solution, and a $50,000 (plus additional associated costs with having an additional car) solution. I chose wisely!