Thank you all for the warm welcomes
Something I just stopped to think about, based on Arnorei's post above - and that is, because there's no mounts or flying involved in GW2 (yay!), bots will most definitely have a harder time in this game compared to (say) WoW.
In WoW, a bot can probably be quickly programmed to fly a certain route, and in most cases, most farming routes involve little to no combat, and, as pointed out, when they do, there is no retuning of levels, no different skills, and no dynamics in the zone that might affect it to a major degree.
In GW2 this is not the case, so, yes, I'd think actually making a bot in the first place will be significantly more difficult (though, not impossible, and it won't stop them doing it, it'll just make it harder, and potentially less worthwhile).