why do people feel disgusted when two guy holding hand but not for the girls?

I know what I've said here isn't the universal truth for everyone and every culture and I might be completely wrong. There are probably many different reasons for why we see things the way we do and I was just trying to offer one possible viewpoint. (●'◡'●)ﾉ

so people just judging cause man look manly i mean their appearance is manly? i dont deny your opinion but sometimes i think rumor and judge someone is so sad and bad thing. it is also true that when you break the rule you will be the one who suffers so much

There can't be any blanket statement about that for every person and every culture, but most of the world's most common cultural trends encourage women to be sensitive and touchy-feely, but discourage men from doing that. Men are also expected to be more sexual. So touch from men is generally seen as more sexual than touch from women. Therefore, it is more likely that men holding hands will be interpreted as being gay than women holding hands.

In addition, in patriarchal societies, gay men are more frowned upon than gay women. In terms of gender roles, gay people are considered to be more gender neutral than straight people, because lesbians are more "manly" than straight women, and gay men are more "feminine" than straight men. This is how society views it, so this is not a scientific statement by any means, and I would not support generalizing about gender identity in the gay community because it is different for everyone. Anyway, because masculinity is preferred and held in a higher esteem than femininity in patriarchal societies, a lesbian presumably being more masculine than a straight woman is a good thing, for the most part. And a gay man being presumably more feminine than a straight man in a bad thing. More masculinity is good, and more femininity is bad. This is obviously a harmful bias many societies have, including mine, and I hope to see that change.

I hope the world progresses to be significantly less nosy. Everyone needs to mind their damn business. Sheesh. But I don't know if that will ever happen.

When two men hold hands, it's a rejection of masculine norms. It's similar to how society sees cross-dressing: in women, it's 'cute.' But when men cross-dress it's 'disgusting,' because society sees it as DEGRADING to be feminine. When men reject masculine norms (i.e. act feminine), they threaten the gender status quo, and society punishes them for it.