See i don't like full cream milk. I only like trim in my fridge. I think it tastes different and i just like it. Same with weetbix. Dh eats about 12weetbix a day but doesn't mind homebrand, yet i think there is a difference in taste so i dont eat them that often, just when real weetbix are on special.
I dont think there is anything.g wrong with liking certain brands or having certain ways of doing things, my husband hates onion,mushrooms, anything chunky but doesn't mind if i can get it in without him noticing he just doesn't want to see it. Like if i.make bolognaise i dice everything finely but sometimes i have left things out completely and just had meat and sauce and he has said its boring, so he doesn't mind the flavour, just the texture of chunky food.
I think if my husband didn't like colgate i would roll my eyes and just get a diff brand. He wouldn't have to make up an excuse like getting ulcers just to use a toothpaste he prefers