If I'd made a blanket statement like "A EULA never has any legal power", then yeah, you'd be absolutely right.

I didn't really make that statement though; my point is that something they put in a EULA isn't always gonna be upheld, and they ( producers ) do flirt on the line between tenable and untenable when they put restrictions on the way a consumer 'is allowed' to use a product.

tough luck kid. That license is a legally binding contract, period.
If the company issueing that license chooses not to take you to court for violating it because that would be too expensive (or in the case of US companies in EU courts futile because of the hostility of the EU towards the US rather than the actual law) that doesn't change the legality of that contract.

And quite besides legalities, using bots is uncivilised behaviour, it's childish, it's extremely selfish in that you're ruining other peoples' enjoyment of the game for your own entertainment.
It's second only to PK'ing in the level of immediate annoyance it provides, and probably worse for the longterm destruction it does to the game economy and society as a whole.

People using bots are scum and rightly treated as such.

Ah, you know what I said -- with regard to legality -- I wont repeat again. With a bot specifically, I fail to see how it can even be a violation of the terms of use of a service/connection, since a bot is usually a modified client.

With regard to morals, no way! PKing is a sin, now? It's a game! people who get worked up about being killed in a game have gone way wrong in the head.

modified clients are against the TOS of most if not all online games, point proven.

yes, PK'ing is wrong. It's murder. And that's against the rules of any game decent people play.
Noone's talking about PVP combat, we're talking (and you know it) about people who murder others by either attacking players with far lower ranking then them and/or luring players into areas where they'll surely be killed.

But you've shown your true nature as a PK'ing cheating pirating (no doubt) lowlife, so there's almost certainly no argueing with you.

Client is an entire machine not necessarily software. Lets think of a Half-life 2 / Counterstrike cheat ( not a bot, a cheat ) replace opengl32.dll with an opengl32.dll that ignores requests to enable the depth-buffer -- this means you can see through walls. Nothing in a EULA could possibly cover that. ( this is a real cheat ). A bot could simply modify information sent between the game and the server ( a modification at the client end, say I want to get a better latency handicap; this doesn't require changing the software, just changing what the computer says ). You find a EULA that actually has words to categorically prevent me inspecting and/or changing what my computer says on a network... See ( http://en.wikipedia.org/wiki/EULA#Enforceability ) for some of my prior statements w/re. EULAs in another persons words, and no, I very rarely play online games.