I got into 3D printing because I wanted custom parts on demand, but I stayed because it rewired how I think about value. Once you can make a thing that solves your problem in an afternoon, the idea of paying full price for “the real thing” starts to wobble. Not because store-bought products are bad, but because plenty of them are overbuilt for what you actually need. That shift shows up everywhere, from cable routing to drawer organization to little quality-of-life fixes around the house.