I find it interesting to see other people in the same position. I don't think it's possible to attribute it purely to traits of narcissism or OCD.
My DH is genuinely a lovely, kind, respectful man, who I am lucky to have as my spouse (and I would hope he would say similar about me!). I read about some horrific men on this site, and I genuinely can say he is the polar opposite of them. I am sure others would say similar, it's certainly not a case of LTB. But that doesn't mean that the behaviour is easy to live with.
You do start to second-guess your own ability to function as an adult. There's a certainty in DH's mind that his way of doing things is the 'right' way and any other way is just incorrect, and that I am the only person in the world who does it the way I think is correct. And it's always little things which on their own don't seem too bad.. 'Why don't you just wash your hands after touching your wallet, it's a small thing to do and the reward of not catching the germs is so much greater.'
And there's always that little grain of logic that's impossible to argue with. Yes, it is correct that someone will have handled that box, it will have been in the back of a van... so yes, on that logical basis the floor is probably the better place than the dining table.. how can you argue against that?
OP, what you said about being treated as child being taught something resonates with me. I am a woman in her 40s who lived alone until I was in my 30s, and yet sometimes I do wonder how I manage to function as an adult? That's not sarcasm, that thought has come to me recently (yes, I have and always have had self-esteem issues). In fact I hid away in the bathroom in tears a couple of weekends ago as I felt so inadequate after getting something 'wrong' - I genuinely can't remember what it was I did now. And it's all said with love and a genuine desire to 'help' me improve.
One thing I did stand up to that same weekend... DH started to show me the 'correct' way to read a book to our daughter.. he got a death stare for that.
I realise now I do need to stand up to everything a bit more, especially as he will soon start to behave in the same way towards our 16 month old daughter (I can't quite get a handle on whether we are behind on this or not, but he refuses to allow her to try using an open cup due to the potential mess, even though she only drinks water... and no messy play). It's easy to let it slide when it's a little thing here and then.. but it all adds up.
Sorry for jumping on your thread OP, it's cathartic!