Me too Alan, I seem to now have two or three of most things, Two tents, one bivi, three rucksacks, three warm full-zip jackets, three mattresses, three pairs of walking trousers, numerous socks, all bought as I learned more and more about the walking and hiking game.
I'm confident I've reached a plateau now, my spending is far less now because I now know (or at least I think I know) what I'm doing.
I certainly hope that by reading our views and experience this will help some people to spend less (or the same if they want to) and so have more funds for travel costs, beer, wine and the other entertainments en route.
I keep advising people on how to have the things that you want and need in life, for the lowest cost, but I could be easily accused of not practising what I preach.