I know that there are theological reasons for and against the holding of hands during the Lord's Prayer, but I'd like to talk about the practical. I suspect that the person who made the decision to hold hands did not have young children.
I have had to, on more than one occasion, break up small fights in our pew over the holding of hands. The fight is never the same. Sometimes there'll be three children fighting over who gets to hold one of Mommy's two hands. Sometimes the problem is that a certain girl doesn't want a certain brother holding her hand, even though he loudly insists. Then there is the power squeeze -- ouch.
I suppose that I shouldn't complain, that's nothing compared to the mayhem during the Sign of Peace . . .