I have three toddlers whose shoes I have to put on and take off several times a day. Two of them have shoes that I can put on and take off very easily. The third has shoes I struggle with every day, several times a day. So I mentioned casually to my wife that we should never buy shoes like that again. I assumed that she had the same issues with them and would simply agree with me.
It turns out my wife likes the shoes very much and also uses a different technique to put the shoes on, so she doesn't struggle as I do. My casual remark that in my mind was the equivalent of "we are running out of milk" was to her a personal insult, because she bought the shoes and loves them also for their aesthetic qualities. How could I have communicated better and avoided the - perhaps unnecessary - fight that ensued over this remark?
Additional information: I learned a new technique to put on toddler shoes.