Like you do in life with any major decisions you pencil some ideas for pros and cons. I think there are some glaring differences that have been jumping out over the last few weeks.
Steem has been meandering along for a couple of years right now as Ned and Steemit have not exactly funded the development like it should have been. For Steem to reach it's genuine potential it needed more than just bread crumbs. I think this is the massive conundrum that hasn't really made sense to the community. Justin bought the mined stake and with his marketing skills he had the keys to open the next level yet failed to convince anyone through his actions. The new development offered so much, but we saw it and he didn't.
What are the cons of staying with Steem as we know it? Steem has changed over the last month from something bearable to something that is just not workable long term. I do believe even though Ned is out of the picture he still has Justin's ear and has been feeding him advice.
Are there any positives? This depends on Justin and how he reacts going forward. The community will decide long term as they will move to the chain they want. Who knows what happens to Steem long term as it still has a chance all depending on what development happens going forward. It could be a massive hit in a year or two years time with a thriving community. I am sure Steem will live on in what form though it is anyone's guess.
Hive has many pros as learning from all the shortfalls of Steem will surely benefit the sister chain. If you know what is wrong through experience you can make things that much better.
I know there are more issues that can be added to both block chains and the only negative right now I have for Hive is that we have no clue what exchanges will agree to list the new currency. I am confident someone like Bittrex will as the relationship seems to be strong and strengthened over recent developments with the hostile take over. Why wouldn't an exchange list with the Hive knowing that there is a strong community backing this project.
For me personally this is probably the most important time to be part of what has happened as it is like starting a fresh yet also having history knowing so many people already. This is not starting as a newbie, but just moving sideways into a new home.