Is it fair that I spend money on my hobbies while my Partner has none?

We are a 1 main income family, I get parenting benefits and my partner works fulltime. I have hobbies like crafting that require purchase of supplies and sewing requires purchase of material. My partner complains that I’m always spending money whereas he doesn’t; he doesn’t do anything else other than play on his computer.

I spend money on my hobbies and our 2 children aged 2 and 3, I’m allowed $30 to spend a week solely on myself but that doesn’t go very far, I don’t really know who’s right.