Have you ever noticed how paying for likes and outright asking for them is considered bad, however giving them away for free and earning them by being a good person is commendable, unless of course you are using the darker sides of psychology to obtain such things. Worse is those that do not care to give or receive are looked upon as liars or oddities.
"Selling is legal. Liking is legal. So why isn't selling liking legal?" -George Carlin