First of all you have to get it out of your head that players "love the shirt". There are hardly any bandieri left anymore. I don't see what's wrong with Ibrahimovic as football is his job, he gets paid to play for the club. Would you be called a mercenary if you left your job and took another one?
Yeah for sure Seedorf currently loves Milan as he's spent nearly 10 years with the club, but don't stretch it as far as "his love for the shirt is priceless", it's not like he used to sleep in Milan pyjamas as a kid. It's funny that you dislike Ibra and call him a mercenary, yet think that Seedorf is some kind of a die-hard Milan ultra. Didn't Seedorf play for Milano's weaker team as well?
Football's a job, players move clubs. No biggie. Anyway me saying he's selfish doesn't mean he doesn't care about Milan, it only means he cares about himself more, IMO. I could even use your words as a proof;
"this guy's hunger for success has no limits" - this statement is 100% dead on and I agree with it, and that explains the tears after Spurs game as well. At the time it looked like he wasn't going to be offered a new contract so it was most likely his last hurrah at another Champions League. Remember what happened after that? Bam, bang-able form from Seedorf till the end of the season, helping Milan complete the Serie A job and earning a new contract in the process. Even though he was ranging from average to bad all the season until February. Moral of the story? He is extremely interested in accolades and trophies, but doesn't bother much with the week-in, week-out process. That's not meant to belittle him, but it's one of the reasons I have little affection towards him.
Remember the trophyless seasons, how was he performing during these years? It's just blatanly obvious to me that he raises his game against big opponents or when there's a trophy at stake. When the team is stuck in mediocricty or struggling he saves his energy, but when Milan are close to winning a trophy he puts on his A game. On the positive side, it's great that he's fired up to give Milan the edge vs strong opponents or at the last steps towards winning a trophy, but the rest of the season he's just mostly a burden on the other 10 players.
Anyway I don't see where this is going as you won't make me like him and I won't make you like him less. Despite that, I've enjoyed this debate. The truth is probably somewhere in between.