What is with guys thinking that they can walk on water?

Actually, it's my female SO who is more likely to do what you're describing. My male SO never tells me a different way of doing things. Seriously, I can't think of one time he's done the thing you're describing and we've lived together 8 years.

But my female SO has very strong opinions about how he and I do things. I.E. run the disposal longer, put the dishes away this way, load the washer this way, hang the towel this way, etc. etc.

Awe, my hubby does this all the time. It's annoying. I say "you know the better way is not disturbing me and allowing me to finish."

And I wear the pants, but I let him think he does once in a while!

My husband and I do it to each other quite frequently. I hate the way he does things in the kitchen - he hates the way I do things in the kitchen. We're just...know-it-alls, I guess? Hahaha

This doesn't happen particularly frequently because we're both kind of lazy and any sort of serious criticism leads to a fine then do it yourself kind of argument so we've learned to just live with it.

I wear the pants... but... my guy never really tells me how to do things. He prefers to sit back and let me do it my way.

Meh.

I think humans just tend to do this, not just men.

My Man does get into shit he shouldn't. I was complaining about my job once, it is very different than his job. I work in health care, and one of the things health care professionals have to do, for their own sanity and the safety of their patients is to not get too emotionally involved in their patients and to maintain a professional distance, as well as very strong boundaries.

Something happened with a patient (it all worked out for the best) and My Man was almost yelling at me, saying, "You do whatever the client wants! The client comes first." and all this shit. I stayed calm and had to explain to him about Professional Boundaries. If we didn't maintain them, we'd let all our patients get into our heads and we wouldn't be any good to anyone after a while.

He did apologies, as his job with his clients is much different. Basically, they kiss the clients' asses. You are kind and professional in health care, but you have to keep control and maintain your boundaries for your own sanity.

He usually has some "better" way of doing things... but then I do, too. I don't think it's just a Man Thing.