The closest BJJ gym to me is a 1 hour drive (much longer in winter). So, to me, adding in an extra half hour to go to a school that teaches and trains 10p is a no brainer. After a year, my wife and kid don't seem to mind anymore, it is part of my routine. I take my kid to the gym with me sometimes. They have an cage, and they play in there while we roll. We threw exercise balls in there and they had a hell of a good time.