Be careful what you ask for...
- longer load times for webpages
- animated advertisements
- increased battery drain (just to due to the ads alone, worse if you play a video)
- popups
- added instability and safari crashes
Does the "content" of having flash offset this? In most cases no.
So far I'm not missing flash... in fact, if they ever do allow it I hope they provide an option to turn it off.