For such a successful brand you seldom find anyone on the internet who says they enjoy the odd Big Mac.
Seldom see an empty Macd.
Whenever I have sampled a local independent takeaway or even cafe I am almost always surprised at how poor quality they are makes me wonder how they survive. That's where Ray Kroc nailed it consistency, if you like it you will choose it over and above a local unknown Chippy etc. Three chip shop near me and everyone selling pre cut pre cooked frozen chips and a ten minute wait if you want a soggy fatty bit of fish and way over a fiver, and no poncy Latte included to wash it down with.
Don't seek them out but don't mind them, Big Mac meal deal at under a fiver seems reasonable value to me.
The only thing I don't like about the business model is the marketing to kids.
I encouraged one of my kids to apply for a job, it never ceases to amaze me how they keep such a young staff busy and generally happy and knowing exactly what they should be doing with fairly little management. Seemed like a good grounding as a part time job.