if your hardware is supported. I would urge you to take it for a test drive. some things are still sort or work aroundy to get setup do to a good install scheme " which is being adressed as we speak". you just have to see it for yourself. It better for the OS to make its case to the end user then for me to try to sell it to you. If you have a spare partition on your drive, give it a spin.
I think most of the selling points of Haiku are the user experience is really very good. It very responsive and attentive to my needs, offers great media playback " on supported hardware" out of the box.
Most things just work. they also work well.
If you interested in trying it hit my pm box and I can walk you through a setup and install some apps.
try using it for a good 2-3 hours straight for web browsing etc and then boot into your other OS.
Then we can debate how to get that user experience out to more people.
It must be seen and experienced to be belleived !.