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I find it normal.

That was something new to me my brother consumes everything in front of him :/ , specially sweets =_=

Same my brother does that too but with cheesecake

It's more if a cultural thing I guess. In the US it's natural for everyone to like sweets (granted there may be certain things that they don't like like I have a friend who dislikes pie (girl) and I have a friend who dislikes cake (guy)). Apparently it's something that's viewed as slightly weird in Japan among the older generation (masculinity and all) however nowadays there isn't much prejudice against it