I've made a personalization test. I made it together with a group of people that I've learned to know a little bit (used to call them losers, well they weren't..). Wow. It was suddenly so clear why I appreciate certain people more than others.
I adore people with flexible minds. People who don't use their brains only to sort things and keep details in order according to a completely repeatable routine, like some simple computer.
I hate routines and like improvisation. I remember the first time I went to London together with my kids. I was proud that I had found a great musical and bought tickets on the web in advance. When I gave them a guidebook at the hotel and asked them what they wanted to do, they explained that when they had been there with their dad, he had had a specific plan for each day. Well, we're all different.