No, I'm talking about the drive and motivation factor of the players, not their importance to the club and injury factor. Seedorf is our number 10 a very focal position in the squad.

Like I said in another thread, I never doubted his talent or what he did for the club (one of our most important player when he teamed up with Kaka to win us the 2007 CL). Is it too much to ask for a defining performance from our attacking mid one that decides a match every now and then?
And frankly, how much at fault Seedorf is here is up for debate. Most players would probably do the same if my place was set and I had a bit of a free pass like he does. The fault lies with the coach and management for not either not grooming a younger understudy and in fact having a somewhat similar player in Ronaldinho in the team when we have our resident dutch maestro. These two will always clash for the place and space now that our attacking dynamics have changed with the signings of Ibra and Robinho.

And for the moment that seems to be the case with Allegri favoring Seedorf ahead of R80 - some will say at the expense of the team. Against Roma it should have been Ronaldinho to come in for the injured Pirlo. And even if Seedorf came in, Allegri could have tried something different and moved KPB behind and Seedorf in a more advanced role up front.
But really it hurts me to see that a player could bring so much to the table and yet he does not - it's not his slowness that I dislike (Seedorf was never a speed-wagon), it's his easy going and lazy approach that I am not a fan of. Your perception may be different here, I will be the first to say this.

And that's perfectly okay. But I want to see a bit more motivation and drive if he starts and comes in as the regular substitute - and not take his position as granted. That may yet be the difference in the Scudetto race, which is going to be one hell of a ride.
PS. Players can be off form, and that is normal. But really, I have seen enough mediocre performances from Seedorf (for his standards, that is) over these past couple of seasons (bad decisions when it comes to passing, walking on the pitch, or plain losing the ball) that I believe we are long overdue a more dynamic option. As you say, he may be okay as a sub for another few years. Problem is when the coach thinks he is more than that.
PPS. Another somewhat long post.

Yikes!