My AC in in their 30s with their own families, and apart from one DGS playing U10 football they’re not doing anything expensive.
However, when mine were young we had ponies. Luckily we were able to keep them at home as extended land beside the house, but their father had left when DD1 was 11, the kids went to schools out of catchment area and I worked part time to be able to do all the school runs (the kids were at different schools right through).
Apart from the considerable cost of actually keeping the ponies, DDs were in Pony Club and Riding Club, competed in dressage, show jumping and eventing, the younger did tetrathlon, both did affiliated showjumping. Some of their membership subscriptions required separate registration (and payment) for each child, and two ponies each, and I as the parent had to be subscribed too. Training in groups at club level or individual lessons, taking two or three ponies out most evenings and competing weekends, usually hacking before school. We sold three ponies over the years, all the others stayed with us until the end of their lives. My DDs weren’t afraid of the commitment and hard work, they made the effort, got up early, pulled their weight looking after the ponies and the yard. But…
Looking back of course it was my coping mechanism: post separation, teenagers becoming increasingly challenging, I used to think that at least if DD was on a horse I knew where she was, and with whom.
The large debt I built up during those years is cleared now, I’m retired and the last pony joined the others in the sky herd years ago. I gave away almost everything, but my house is full of their photos to remind me it wasn’t all a dream.
DS had a dirt bike and had hoped to do schoolboy scrambling, but ended up committing only to local football. I’ve no doubt he resents that I didn’t divide my time and my spending more fairly. His father was too busy with his new partner to be generous with his time, good as he was with financial support. I can’t reverse that and now he lives abroad.
DDs sometimes suggest taking the DGC for riding lessons but I definitely wouldn’t recommend it!