Paper or Electronic Checkbook Balancing?

I'm old-fashioned--I still balance the family checkbook with the bank statement, pen, and calculator. I've tried using MS Money and Quicken in the past, and it was just too much of a pain to sit down and input all the items. I'd forget to do it, then have to do three or four months worth of transactions at a time. Even downloading the information from the bank's website to the book-keeping program turned into a major headache. It's so much easier to just pull out the checkbook (wherever I may be) and see what's going on rather than have to wait until I get home, turn on the computer, and hope everything's up-to-date.

Other than keeping track of categories of spending (for which I admit computer programs are much better than I am), are there any pressing reasons why I shouldn't continue balancing my checkbook the way I do? I mean, as long as the checkbook balances, that's all that matters, right?