I'd love to have less stuff, but I don't know how that doesn't turn into simply having the wrong stuff.
http://w4tler.at/schuhe/jaga-schwarz-herren
Perfect for almost everything all year. This guy [1] walked 15.000 km with them. He needed just 3 pairs of them.
[1] http://www.globalchange.at/home/willkommen.php?main=home&sub...
I just did exactly this. There is now ten miles a week of walking in my commute. I wore out three pairs of shoes before spending a bit more for some Doc Martens; they meet exactly this requirement. Not too heavy for "city" walking, although a bit heavier than trainers. No problem in the wet. Durable. The only reason I wouldn't go hillwalking in them is wanting to keep them clean.
(This is almost literally the "Vimes boots theory of poverty" from Pratchett)
So if you're hiking a lot and sneakers don't cut it, go ahead and get something that does. But applying the lesson above, if you think about it and you hike only occasionally and it's on easy terrain and sneakers really are good enough, then don't buy the hiking gear that might make those easy hikes 1% better. That 1% comes at a cost of A) the purchase price itself, and B) having more stuff in your life to deal with. Yeah, it's nice to have sweet gear even in those circumstances, but it doesn't really make life appreciably better. Overall, cumulatively, such purchases make life worse.
I wonder how many times i have read a news report about some tourist that needed to be rescued because he or she tried to visit some view or other in shorts and loafers.