benignuman, I posted before I saw your post. I went to an elementary school which was mainly run by chassidim but most kids in the school were litvish. They would never go out to a baseball game. On lag b’omer, we either went to the zoo or went to the park and played baseball and had a barbecue.
If you ever went to a baseball game, I think you would agree that it’s the most clean entertainment you could possibly get. Baseball itself is not bad, it’s the atmosphere around it that is.