I can relate to the football thing but I find myself bouncing back to support my favourite club even at their lowest.
I find it really cool being an introvert and I don't see myself changing so I don't know what the swap felt like for you but as long as you are good about it- you definitely made the right decision.
Your conclusion says it all, we are capable of detaching ourselves from any form of relationship if we truly want to do so.
Thanks for reading