If you're winter sailing in the UK, Europe or parts of North America, you may definitely care - getting even a bit of cold water in the boat can make sailing less pleasant on light wind days when it's otherwise comparatively warm. We notice it even in Canberra in the winter.Why bother with transom flaps when the floor is 4" above the keel?
Who cares if water gets in when you're faffing around the stern getting off the shore?
Looking at it from another angle - if almost everyone you saw was sailing designs made in the '70s, maybe it indicates that those boats still work very, very well?I was coaching the other day and at the end of the day watching everyone pull their boats out, I noted there was one boat built after the 70's. The rest were before. Lasers Finns, Etchells... There are vast improvements that can be made to each of these, so maybe its time.