can those 2 people still marry each other, what is the point of asking anyone if they object?

I have more male friends. I was thinking that if one of them got married and they wanted me involved in their wedding party, I'd expect them to ask me to stand with them instead of forcing me to be with the bridesmaids just because I'm a girl. Is this weird? I know people who have had groomswomen/bridesmen before despite how rare they are, and when it happens there's usually only one. About three years ago a friend went to a wedding where there was a groomswoman, she was the groom's cousin and they thought it would make more sense to put her on his side as she didn't know the bride very well, so it would make her feel a bit awkward standing with someone who is more or less a stranger. Plus three of the groomsmen (her own brother, the groom's brother and his childhood best friend) she grew up with, so it makes more sense. Yet most of the time I see grooms' sisters, female friends etc forced to be bridesmaids. Wouldn't it make more sense to put them with the groom if they're closer to him? And vice versa. For anyone wondering about attire, in the example I gave the bride took all the female attendants dress shopping with her. The groomswoman wore the same dress as the bridesmaids, except hers was black.