> [...]but people go on Facebook and G+ to feel good[...]
Very true, but to add to that another factor that shouldn't be underestimated is that it's companies advertising on these platforms that are footing the bill for their operations.
Fewer companies will want to advertise with you if their company/product page can be disliked. To name an example Monsanto has ~22k likes (https://www.facebook.com/MonsantoCo) they'd probably have at least two orders of magnitude as many dislikes if people could "dislike".
I'm not sure that's necessarily true. Sites like Amazon, NewEgg, EBay, and anyplace else with a ratings system for products and product sellers seem to do fine, despite the potential for getting negative reviews and ratings. These are sales channels rather than advertising channels, so maybe that makes the difference.
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Fewer companies will want to advertise with you if their company/product page can be disliked. To name an example Monsanto has ~22k likes (https://www.facebook.com/MonsantoCo) they'd probably have at least two orders of magnitude as many dislikes if people could "dislike".
I'm not sure that's necessarily true. Sites like Amazon, NewEgg, EBay, and anyplace else with a ratings system for products and product sellers seem to do fine, despite the potential for getting negative reviews and ratings. These are sales channels rather than advertising channels, so maybe that makes the difference.