Why? It's basically soliciting vendors but with a broader scope. If you're redoing your kitchen you might actually want to buy a home magazine full of ads. It's Pinterest, which is hugely popular and I use all the time, but for print. Once I find roughly what I want I still have go through the vetting process to make sure it's not trash but it kinda solves the unknown unknown problem.
However, ads when I'm not looking for them can just fuck right off.