What has it come to in this world where you cannot expect good temper towards you? Has no one even the mildest understanding of feelings? You don't have to be well behaved of even polite with the "thank yous" and "pleases" to be kind to someone. Rudeness isn't measured by the things you leave out (or sometimes what you put in for that matter). It measured by how you lie, take and ignore. When it comes down to things, wether you are good or bad, you know the kind of person you are for real. If someone treats you with kindness, 90% of the time they expect it in return. And you never know... That next person you treat like an ass, might not ever return kindness to anyone else. So watch it.