I realize I am late to this discussion, but would like to offer my thoughts on the OP question. I have often heard the comment that the sign of peace is at a time in the mass when it disrupts one’s preparation for receiving the Blessed Sacrament. I want to be sympathetic to those who express this concern, as I suspect they are the same type of folks who I would agree with a lot of things relative to the liturgy and the faith. Certainly I felt the same way in the pass when told to stand while the community receives communion. I certainly think that modern liturgists, in the name of “community”, seem to have had little concern with the idea of actually praying at mass. But when I look at it honestly, I do not think this concern applies with regards to the placement of the sign of peace. One has just finished praying the EP, and then any private preparation, if it has started has already been distrupted by the Our Father. After the Sign of Peace, if the Agnus Dei, the preparation for communion (ie. Behold the Lamb of God…), the priest and clergy receiving communion, and then waiting for one’s turn to get up from their pew, it seems that there is plenty of opportunity for personal prayer and preparation.
So while I understand what people think of the sign of peace, I don’t really see it as rising to the level of justifying what is dangerously close to disobedience by not participating in the sign of peace. We Catholics cannot just decide what parts of the mass we like and don’t like.
Now, I do think that there is absolutely nothing wrong with a considerate, but simple, nod of the head towards our neighbor, if one does not want to shake hands, etc. I also think that everyone should be cognizant of the time when the Agnus Dei is starting and the sign of peace should not be going on in the pews during that.
Just my opinion, its worth what you paid for it.