Good question. I don't really remember when I started liking lofts. Come to think of it I don't think I actually know anyone who lives in a loft. You see lofts on TV, in movies, in design magazines. These lofts obviously look good. Have I actually spend a lot of time in a loft? I don't think so. What I do know is that I like open space. Height especially. During my boarding school days I get used to living in very large and open space. I find it calming. That's why I never like old Victorian houses, even most of them are big in square footage. Lot's of little rooms are not for me.
The other thing is that I alway want something architecturally different. Even this current house -- the best thing is that it is nothing like a normal Colonial. A open space with high ceiling and big window is, architecturally different, and interesting.
How to pick the right one? Location -- what is a good location? A city loft needs to be accessible without driving.