I'm on a minimalist path, too, and have given away or sold excess books and furniture that wasn't really being used. We have all this wonderful space, but we also have some beautiful pieces that, while we may not "need," still add beauty to our surroundings, which makes people who walk into our plain-on-the-outside home and say "Wow!" Like Gerard said, if it's not causing unhappiness, excess money, and you're still enjoying it, there's no reason to get rid of anything just to get rid of it. Declutter, yes, but remember that your house is also your home. It should reflect your personality, not feel like an echoing void. You have to find the balance.
I have a new Xbox that I bought last year after my old Xbox finally died from years of use. I have no plans on getting rid of it, and I have a half dozen games that I like to play occasionally (couple times a week for a couple hours), but when this new console finally dies, I will probably not bother buying a new one.
So, enjoy it while you have it, and come back to the question if and when it dies to see if you would care enough to spend the money on a replacement. And if they fit, use those shoes until they wear out!