I like a lot of the team and have merch from a good few of them. As a Scot watching a foreign sport I find it a bit strange when people are massive fans of say, Barcelona, Madrid, or in this case The Giants or The Packers etc etc. I follow whoever catches my eye. At the moment it is Matt Ryan and the Falcons, who are by far and away the best team (offence) to watch at the moment, and for me that's as far as it goes.
So to answer the question, why do I follow who I follow, the answer is, whoever takes my fancy at that particular time.