We don’t because to cook five ready meals would take just as long as cooking* something quick for everyone. Plus they would all be ready at different times making it awkward to eat together. And, to buy five better quality ready meals would almost certainly cost more than doing it yourself.
We tend to freeze left over portions of bolognaise, chilli, curries etc so if needed we can just reheat one of those.
If cooking for a family I think the closest to a ready meal that really works is a couple of packs of the ready chopped stir fry veg with chopped chicken breast and rice noodles. I have no aversion to cheats like ready chopped veg by the way!
I don’t have an aversion to ready meals, they just don’t work for us. I know last year when my mum had surgery on her hand they were a life saver. Also, if you lived alone and didn’t have storage for loads of batch cooking, ready meals could offer you the variety that would otherwise be more difficult to achieve.
I guess we also eat out if we are pushed for time or just need a night off cooking, which again is a luxury many don’t have. Mind you, if we end up somewhere like Prezzo I’m not sure that we aren’t really eating ready meals just heated up by someone else!