I finally removed flash from my main browsers (Safari and Firefox). I don't even using FlashBlock anymore since that lies to sites ("I want flash content!") and sometimes prevents html5 video from appearing. I use Chrome as my backup when I really need Flash, ie: to watch Fringe on Hulu once a week.
Whenever I do run Flash, it inevitably kicks one of my Core2Duo's cores to 100%. My laptop heats up, the fans kick on at full volume. Then I close down Chrome (which didn't have flash in the foreground or operating anyway, but maybe in a background tab) and the fan shuts off, cpu drops back down to 2-4% usage.
Having flash on my phone sounds about as good as towing a yacht with my bicycle. DO NOT WANT.