I am joining the kkards and Inge lineup, in competition for biggest addict ever!
Funny you should ask, though, because my beloved old boatneck mariner from LL Bean is toast (I wore it for a decade, so...you know...) and they don't seem to be making them. So. I need to find a replacement. It's not going to be easy, believe it or not -- that sweater had just the right weight and heft to work as a top in cool weather (and layer over) or as a summer sweater over a sleeveless top.
Anyway...the current stripe lineup. As you can see, I like them in various cuts and weights and wear across all seasons. For me, they are essentials in navy and white (light or dark background) and an excellent addition in other colours.