People playing off meta

All time I see people playing off-meta getting reported or flamed, like {{champion:17}} Jungle, {{champion:80}} supp or {{champion:222}} top. Why can't people let other people play what they want if they are playing to win anyway. Currently I'm playing {{champion:28}} with {{item:1400}} {{item:3147}} {{item:3117}} {{item:3142}} {{item:3078}} {{item:3074}}
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