I don't see how people can say botting hurts the economy - it hurts the people who are not botting and wanting to farm gold to buy stuff, but the economy itself will stabalize itself and continue on just fine. The bright side is it now makes drops more valuable than gold when some people were complaining that the gold AH just turned the game into a gold farming rather than loot farming game.
Meanwhile just so we can have all the computers and gadgets we enjoy people are exploited in a very real way that effects their entire life rather than a game they enjoy in their free time, so I'm in the zero fucks given camp.
Let's put it in nice and easy terms so you can understand why it affects(hurts) the economy.
We'll go with nice round numbers for ease. Let's say the maximum someone bot or otherwise could make per hour is 100K gold.
Now say that Blizzard *included* a bot with the game. Your income for a 24 hour period is 2.4 million gold.
Now say that Blizzard included that bot for everyone in the game, except for you. Even if you played for 8 hours a day, you'll still have only 1/3 of what every other person playing the game has. All the prices on items would be effectively much, much higher than they are because gold would be much easier to come by...except for you.
You'd effectively never be able to keep up with the rest of us because the prices from your perspective would be skyrocketing even if you were devoting 8 hours a day and likely far less than that. In the reverse situation, if there was just one person in the entire game that had the bot, yeah it wouldn't mess up the economy, but as the number rises and rises, it would mess it up more and more.