Why are hobbies so expensive!

Does anyone have the answer? It can’t just be the hobbies I’ve chosen to do over the year that have all been expensive! 
Previous hobbies rock (semi precious) collecting, sewing, embroidery, knitting, jewellery making, beading, woodworking. Still do all of them occasionally . 

Disclaimer GARDENING IS NOT A HOBBY! it’s a passion, necessity and good for your health.


I’ve just worked out for my next crochet project I want to make, will cost me £23.08 + P&P for the wool (January sale prices) £ 6.41 for the pattern. 

Don’t even get me started on Bobs hobbies. Wood turning ( longest running hobby), bee keeping (new hobby, money going out the door, not a bee in site!), orchid collection (previous hobby), ferreting (got bored, I had new pets). He’s worse than a bloody child! 
Makes me feel better about my £30 ish crochet project     . 

Anyone else? Or is it just me?