We don't serve their kind here.

Posters here have given excellent, logical answers to this, so respect to them.

Yes, it's probably because droids don't have money, so they can't buy drinks or food or entertainment, since they don't even need entertainment to begin with, so they would just be useless hunks of metal taking space.

There's another factor I never saw anyone talk about here - a droid, being a machine, could capture, take video and audio of anything and everything in the place. They could create long reports instantly to be sent wirelessly to some orbiting ship (not that spaceships should EVER need to orbit a planet, when you think about it).

This means, droids would be VERY potent potential spies, and a bar where rough, possibly wanted outlaw-type people come to relax and have fun would be disrupted by all of this, and lead to very serious consequences.

They would be useless customers, they wouldn't know 'how to have fun', they couldn't organically mix with the.. well, organic customers, and they would be of no use, unless they're specifically used for security and such purposes by the owner.

The only qualm I have about this is that he says 'we don't serve their kind here'. I mean, they're not a 'kind', you can't SERVE them since you have nothing they want from you, and saying 'we' makes no sense.

What he could've said, is something like 'droids and robots are not allowed here' or something. But 'their kind'? Really? THEIR KIND?! As if they're some kind of race of beings, when they're just constructed, soulless devices (sorry, translator and vacuum cleaner robot, but you are), not really any 'their kind'. Why not just say mechanical devices or robots, droids, etc.? Why say 'their kind'? Why mention 'serving', when it's impossible to 'serve' a robot (you can SERVICE one, I am sure, though)?

The attitude is logical, the line isn't.