If I have time and there's a game top watch, I'll stop. Normally I would draw the line at the full size field. But I did go to a LL all-star game last night. A majority of the roster were younger brothers of kids closer to my son's age (15) or neighbors.
I would probably be turned off at the price of attending a MLB game but I'm fortunate to get free access a few times a year in Philadelphia (includes food) and Boston.
Otherwise I enjoy affiliated MILB (potential stars of tomorrow), college and high school ball. My son's games (high school and travel) are a given as the favorite. My son and I will hang at the travel tournaments and watch other good teams play. We'll also watch the Junior Legion games of his high school teammates who have chosen not to play travel.
Where we live we drive by the Villanova field often. It's also used for a semi-pro league, Junior Legion and Legion. If we (my son and I) see cars we almost always drive through to see who's playing.