I'd say I wouldn't choose to live without emotions, but mainly cause I've live all my life till now with emotions and I am aware of the fact that, maybe some (or even most) of them suck, but there are some that are fine.
On the other hand, if I had be born totally emotionless, I'd probably wouldn't feel that I am missing something, merely cause I'd have never experienced it. Likewise, I might be thinking that flying is fine, but it doesn't bother me the least that I do not have the ability to fly, since it's not an option and I don't cannot really comprehend how flying is like.
Now, if they told me that I could tomorrow chose to get ride of all emotions, I don't know what would my answer be. My whole mindset up to now is built with having emotions. Would I be able to adapt? I don't know.