Yes!!! My parents always cooked like this (use an item multiple times, base meals on what is in the fridge) and I didn't realise how unusual it is until I spent more time at my friends' houses.
I went to the freezer for ice and there was only ice and vodka in there. Initially I thought this was epic (still do TBH), but I just can't see how there were no vegetables, or leftovers? Or even a frozen microwave meal. When we cooked at her house I would always stop at the supermarket to pick up bits from her list and they were really specific (three chicken breasts, one stick of lemon grass). When we were hungover and could go to the shop for ingredients we 'had' to order takeout. Worse than that we needed to wait until noon when the pizza place opened. How do people live like this?!?!? [BTW this is not a poor rant, she is has a high income and can totally afford to live (although not retire) like this]
I don't often follow recipes, but can always put together a meal, and often trying new variations because of cupboard roulette is a joy. [Advance cupboard roulettte involves opening tins that have lost the label and then deciding what to cook, Master cupboard roulette you just open the tin right over whateve pan you're cooking in]