Macros are a legitimate use, and have been in every MMO since the dawn of them, to decrease the amount of clicking/pressing. This would not be an abuse by a bot, as you would still have to run to each node.
There are already plenty of bots out there, using pos hacking etc. The gathering system is so simple, that bots are so easy to make. By making it a click instead of a button, doesn't stop those who are able to program the bots.
Implementing a legitimate button/macro/keybind etc. would level the playing field, and remove some of the monotony of clicking clicking clicking...
For me at least, I prefer to use the keyboard more as it gives my right-index finger a break from doing all the work! Work all day, game at night, I am going to end up with carpal tunnel syndrome sooner or later at this rate. Please allow us to make the choice of which button to press (mouse or keyboard!)
Part of the reason I loved FFXI so much was the ability to do EVERYTHING on the keyboard, and never having to touch the mouse :/