I'll be honest I would like us to remain a superpower. However, those come and go. Yet, I hope we do have other superpowers. Then we can have anti-EU, anti-Asia, whatever threads too. j/k.
Seriously, it would help even the work load. Yeah, we have "agendas" as everyone in power will (it does corrupt absolutely after all). But we still do humanitarian work and it would be nice to help the rest of the world too. Of course there is a risk of another Cold War to brew. Well, the Earth is going to hell in a hand basket anyhow so screw it, eh?