THE STRIKESir:In the short time since the baseball strike began I've noticed some drastic changes in my life and in my mental and physical behavior. I'm having fewer headaches and stomach problems. I'm losing less hair. I'm getting more sleep as a result of not worrying or staying up to listen to games on the West Coast. I have money in my pocket that would otherwise have been used to pay for tickets, tolls, parking, scorecards and hot dogs. I spend more of my time at work doing my job, because I don't have to keep sneaking off to get scores. I've rediscovered the opposite sex. So, what's bad about the strike? I'm miserable!GEORGE FALKOWSKIScotch Plains, N.J.