My dad was very accepting of me and my brother both wanting to learn to play (me bass, and my brother guitar) and agreed to sign the hire purchase agreements which allowed us to buy our first instruments and amps, as I was only 12 at the time.
We paid him back every month from our paper round wages. He used to give me lifts to gigs and rehearsals too, and we'd go and see local pub bands together.
My dad would have liked to be a drummer, and only i found out recently that his dad used to be a violinist, so maybe that's why he is so open and helpful.
My mum strangely never showed any interest at all in our music, never asked about what we were doing or seemed very interested when we'd done well, which was a shame.