One of the main reasons people end up in Downriver is the housing math. Compared with a lot of the suburbs further north or closer to Detroit proper, you get more house and more yard for the same number. Southgate, Taylor, and Riverview are the obvious examples, but it is true across most of the region.
The housing stock is mixed in a useful way. Starter homes, mid-century ranches, traditional colonials, a handful of newer subdivisions in places like Woodhaven and Brownstown. That spread is why first-time buyers, growing families, and downsizers all find something here in different price bands.
Commute-wise, you have I-75, I-94, and Telegraph all close, so getting to Detroit, Dearborn, or Romulus is straightforward. Detroit Metro Airport sits right in the middle of it, which is a real perk if you travel for work or have family flying in.