What do you like best about bitcoin?
Decentralization, transparency or easier to move?
Or just it makes you look cool?

All of the above. To me decentralization is the biggest benefit as being able to send and hold money that is free from goverment theft is awesome in my opinion. I look forward to being able to spend it all over the world in the future.
I agree with all of that and also I like bitcoin as it is i mean it as a whole. It's structure, features and capabilities. It has so many to offer to every user. And what's good about it is that it gives earnings and profit to everyone of it's users. And also how the world changes and becomes advance in terms of technologies and how bitcoin is being advance also.