There are plenty of reasons to be negative about this trade but there are some reasons to be positive. I think we should stick to the positive in this thread. Yes, Welcome to Boston Paul George. Come help us win a title. Books still have BOS as the 4th top favorite to win the title, behind SAS, OKC, and NYK. That is pretty good considering all the (understandable) angst that has been expressed about this trade.
A couple of things that I keep telling myself to help me accept this trade. First, Paul George did play well in the playoffs. In 11 games, he scored 16.4 pts with 49% 3P%. And to me, he seemed to have the knack to score when PHI needed it most. And this without ever having plays run for him. It is more of a Derrick White type role vs. a Jaylen Brown role, but nothing wrong with having more Derrick White level players on your team.
The other thing I keep telling myself is that Al Horford was 35 at the start of his second BOS run and he was a pretty productive and important player for 4 seasons. Yes, minutes were managed for Horford, and yes, he could only give you 25-30 minutes max, and never on back to backs, but he still was a key part of a title team. So mash up Derrick White and Al Horford and that is where I see Paul George.