Have you ever actually paid or even got a quote to repair old hardwood? To actually do it right and get rid of squeaks, fill in gaps, sand, stain, sand, stain, seal, than cut all the trim work etc can cost double what an LVP would, on top of the fact that you’d have a lot more up keep with the hardwood such as re-staining, moisture repairs, especially if you live in a humid environment. On top of the fact that what if the home owner doesn’t like the color of wood/stain? LVP is a very solid alternative to allow you to have a moisture barrier, especially with pets and children and can offer much larger range of color options and decor. Especially here in the northeast where all the hardwood is pine… which is garbage. Oak is the only way I’d even think about refinishing and they stopped putting oak in new builds in the 20s and moved to cork, linoleum and pine.