Many of my old windsurf friends also went kiting.
Some of them are still doing both.
My advice is, give it a go yourself and then decide wether you like it or not.
I've tried it. From the very first moment, I knew it was nothing for me.
No regrets. No hard feelings towards kiting nor to the friends who are kiting.
We just don't sail together anymore. That's all.
In the mean time a lot of new friends who like windsurfing !
It's like sergio said, you have to do what you like to do and not what others push you into.
Soon enough you'll know if you are a true windsurfer.
IS87 / IS101 / RRD114 / US147