Think of it more like this: If I was selling you a car and said it would last for years, then would you expect it to fall apart after two years? I certainly wouldn’t. When talking about small quantities we tend to specify an exact number (two, three), however as the range becomes larger and less exact we use generalities (years). Because of this “years” would typically refer to a span of at least 3-5 years, and I would argue even longer.
Even given that convention, with your example, a car is a far steeper investment than this ring. The more you invest in something, the more you expect to get out of it, and this ring is designed for a very low investment point, while still being highly durable (there are other similar rings out there at even lower investment points, but they probably won't survive anything beyond a sprinkle).
I’m not talking grammar, I’m talking convention.
Think of it more like this: If I was selling you a car and said it would last for years, then would you expect it to fall apart after two years? I certainly wouldn’t. When talking about small quantities we tend to specify an exact number (two, three), however as the range becomes larger and less exact we use generalities (years). Because of this “years” would typically refer to a span of at least 3-5 years, and I would argue even longer.
Even given that convention, with your example, a car is a far steeper investment than this ring. The more you invest in something, the more you expect to get out of it, and this ring is designed for a very low investment point, while still being highly durable (there are other similar rings out there at even lower investment points, but they probably won't survive anything beyond a sprinkle).