The fact (if it's true) that the most dangerous dog per decade has changed doesn't really prove anything. Maybe it has to do with Dobermans being more common at that time combined with their characteristics and type of owner. Your choice of word "happens" downplays that breed, prevalanece and ownership all factor into the equation. This is not just a coincidence.If you look closely or farther back that the breed that has killed more people per decade has changed every decade since the 70s. This time it happens to be the Pit bull's turn.
My answer to your question about... could I love another breed? My answer to that would be the same as yours if I were to ask, "Could you love two different dogs if you couldn't have the ones you do now?"
The obvious answer is, Yes...of course we could.
All it means is that insecure douche bags who know nothing about raising dogs properly have gravitated towards different breeds as an extension of their penis. I know you have had PB's and I'm not saying you are that type of person. What I'm describing is the likely profile of the PB owner whose dog goes out of control.
I knew your answer would be "yes" that you could love a different dog because:
a) you seem like a reasonable person
b) you seem like a person who appreciates the intricacies of raising a dog
c) you "happen" to like PBs but don't "need" it
The purpose of asking you that question though was a run around to avoid the "how many breeds should we kill" line of thinking.
At the end of the day I want people to enjoy the pleasures of dog ownership but at the same time I also want to minimize harm.
Apparently chow chows are pretty dangerous dogs..... but in a octagon I'll take my chances against that dog any day over a PB