CoolerPseudonym, I have been a Spurs supporter for quite a while, but I’m an American, and my connection to the team is not, possibly, as organic as someone who lives there.
I literally picked them. Because I was mad at some Arsenal supporters who were making antisemitic jokes on an EPL discussion board.
Then I had a roommate who supported Chelsea and I didn’t like him either.
The rest is Pascal’s Wager. Eventually it becomes emotionally real, and then instinctive.