Ok never posted in this thread before but here's my story.
I actually started supporting Inter since Ronaldo left the club. The fact that I never liked him aside, my reasons for rooting for inter since then had other factors beside Ronaldo's departure. One of them was the large crowd of Argentinians that gathered in the club at the time. At that time I was never really a dedicated fan for any foreginer clubs in the world. The only exception was Barcelona which I liked since the mid 90s. The other teams which I used to support were the ones that had argentinians in them. I was only rooting for argentinians and their clubs till then, cause I am an Argentina fanatic almost my whole life! Lazio was my #1 team in Italia back then.
As for other factors, Cuper who I had great respect for (beside being an argentinian) being the coach of the club, the blue color of the shirt which has always been my fav color (beside black now), the recent scudetto story and that the club dramatically lost it in the last day against Lazio (I was watching the match live from tv), Massimo Moratti who I admired his passion for the club no matter how wrong his policies were at that time... I dunno, something was dragging me in to this club. Those reasons that I mentioned were just some but they couldn't be all I think. Tbh I was looking at this club and reading about them for sometimes and I kinda liked them, but it wasn't to a degree that I could call myself an 'Inter fan' at tha time! When Inter was playing Lazio in the last day I was somehow indifferent if Inter wins the title or not. I wanted them to win it over Juve or Roma but still were more indifferent who will win it since Lazio was out of the race. But I saw Gresko's flop, Ronaldo's tears, Simeone shaking his head after heading the forth goal in Inter's net... it was touchy to watch and could also affect my feelings getting strong about them by the time.
Anyway, since I started supporting Inter I just got stuck to 'em like I've never been before to any other club (not even Barca). Now for years I've been rooting only for Inter and Barcelona, and also Atletico Madrid to a much lesser degree (only when the other two are not there).