I didn't think Flash ran that well on my Nexus, but I suppose it was handy at times. But it did slow down the browser (at least on the sites I visited), and it did impact battery life. I can say that 99% of the time, I don't miss it, so it's not a deal breaker for me by any stretch. I'd rather websites just use HTML5 and provide a mobile site. But that is just my opinion of course.