I am always late and trust me, I squeeze no satisfaction out of it nor do I fool myself by believing I'm better than the people waiting for me. In my case it's simply a reaction to having been stood up repeatedly for years...
Now that I come to think more carefully, I might just not be that smart and am just unable to schedule my time :P
One thing is for sure, I just discovered my condition has a name chronic lateness, thank you for that!! :)
It must really suck to have been stood up so many times. But either way bad habits don't last forever, eventually you will start to be able to arrive on time for any gathering haha