There are a few programming and writing projects that I've been wanting to finish for years.
So when I look at a new hobby or interest, like the ones you describe above, I think, “Ah... sounds fun... some day... But first I have to finish what I've started.” Not having the stuff around helps keep me focused.
The pain of not finishing my existing projects is greater than the pleasure I'd get from the new hobby.
(FWIW, the few things I own include the hiking gear you describe.)