I have the same problem, although my parents do pay towards around 2 training sessions a month, i can pay the other 1-2, therefore i get a decent amount of play now.
They have a wine at me about it, saying its a waste of time and money. My dad isnt so bad, im training with a team and have decided to start working out more/going to the gym with my dad, and that kind of made my dad feel a bit different towards it.
Although they still consider it a hobbie and not a sport, its slowly getting into there heads.